2020-09-02 09:42:51 +02:00
<!-- HTML header for doxygen 1.8.18 -->
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
< html xmlns = "http://www.w3.org/1999/xhtml" >
< head >
< meta http-equiv = "Content-Type" content = "text/xhtml;charset=UTF-8" / >
< meta http-equiv = "X-UA-Compatible" content = "IE=9" / >
2021-01-26 11:28:50 +01:00
< meta name = "generator" content = "Doxygen 1.9.1" / >
2020-09-02 09:42:51 +02:00
< meta name = "viewport" content = "width=device-width, initial-scale=1" / >
< title > OR-Tools: min_cost_flow.cc Source File< / title >
< link href = "tabs.css" rel = "stylesheet" type = "text/css" / >
< script type = "text/javascript" src = "jquery.js" > < / script >
< script type = "text/javascript" src = "dynsections.js" > < / script >
< link href = "navtree.css" rel = "stylesheet" type = "text/css" / >
< script type = "text/javascript" src = "resize.js" > < / script >
< script type = "text/javascript" src = "navtreedata.js" > < / script >
< script type = "text/javascript" src = "navtree.js" > < / script >
< link href = "search/search.css" rel = "stylesheet" type = "text/css" / >
< script type = "text/javascript" src = "search/searchdata.js" > < / script >
< script type = "text/javascript" src = "search/search.js" > < / script >
< link href = "doxygen.css" rel = "stylesheet" type = "text/css" / >
< link href = "styleSheet.tmp.css" rel = "stylesheet" type = "text/css" / >
< / head >
< body >
< div id = "top" > <!-- do not remove this div, it is closed by doxygen! -->
< div id = "titlearea" >
< table cellspacing = "0" cellpadding = "0" >
< tbody >
< tr style = "height: 56px;" >
< td id = "projectlogo" > < img alt = "Logo" src = "orLogo.png" / > < / td >
< td id = "projectalign" style = "padding-left: 0.5em;" >
< div id = "projectname" > OR-Tools
2021-04-27 23:00:03 +02:00
  < span id = "projectnumber" > 9.0< / span >
2020-09-02 09:42:51 +02:00
< / div >
< / td >
< / tr >
< / tbody >
< / table >
< / div >
<!-- end header part -->
2021-01-26 11:28:50 +01:00
<!-- Generated by Doxygen 1.9.1 -->
2020-09-02 09:42:51 +02:00
< script type = "text/javascript" >
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3& dn=gpl-2.0.txt GPL-v2 */
2021-01-26 11:28:50 +01:00
var searchBox = new SearchBox("searchBox", "search",false,'Search','.html');
2020-09-02 09:42:51 +02:00
/* @license-end */
< / script >
< script type = "text/javascript" src = "menudata.js" > < / script >
< script type = "text/javascript" src = "menu.js" > < / script >
< script type = "text/javascript" >
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3& dn=gpl-2.0.txt GPL-v2 */
$(function() {
initMenu('',true,false,'search.php','Search');
$(document).ready(function() { init_search(); });
});
/* @license-end */< / script >
< div id = "main-nav" > < / div >
< / div > <!-- top -->
< div id = "side-nav" class = "ui-resizable side-nav-resizable" >
< div id = "nav-tree" >
< div id = "nav-tree-contents" >
< div id = "nav-sync" class = "sync" > < / div >
< / div >
< / div >
< div id = "splitbar" style = "-moz-user-select:none;"
class="ui-resizable-handle">
< / div >
< / div >
< script type = "text/javascript" >
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3& dn=gpl-2.0.txt GPL-v2 */
$(document).ready(function(){initNavTree('min__cost__flow_8cc_source.html',''); initResizable(); });
/* @license-end */
< / script >
< div id = "doc-content" >
<!-- window showing the filter options -->
< div id = "MSearchSelectWindow"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
onkeydown="return searchBox.OnSearchSelectKey(event)">
< / div >
<!-- iframe showing the search results (closed by default) -->
< div id = "MSearchResultsWindow" >
< iframe src = "javascript:void(0)" frameborder = "0"
name="MSearchResults" id="MSearchResults">
< / iframe >
< / div >
< div class = "header" >
< div class = "headertitle" >
< div class = "title" > min_cost_flow.cc< / div > < / div >
< / div > <!-- header -->
< div class = "contents" >
2021-04-27 23:00:03 +02:00
< a href = "min__cost__flow_8cc.html" > Go to the documentation of this file.< / a > < div class = "fragment" > < div class = "line" > < a name = "l00001" > < / a > < span class = "lineno" > 1< / span >   < span class = "comment" > // Copyright 2010-2021 Google LLC< / span > < / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00002" > < / a > < span class = "lineno" > 2< / span >   < span class = "comment" > // Licensed under the Apache License, Version 2.0 (the " License" );< / span > < / div >
< div class = "line" > < a name = "l00003" > < / a > < span class = "lineno" > 3< / span >   < span class = "comment" > // you may not use this file except in compliance with the License.< / span > < / div >
< div class = "line" > < a name = "l00004" > < / a > < span class = "lineno" > 4< / span >   < span class = "comment" > // You may obtain a copy of the License at< / span > < / div >
< div class = "line" > < a name = "l00005" > < / a > < span class = "lineno" > 5< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00006" > < / a > < span class = "lineno" > 6< / span >   < span class = "comment" > // http://www.apache.org/licenses/LICENSE-2.0< / span > < / div >
< div class = "line" > < a name = "l00007" > < / a > < span class = "lineno" > 7< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00008" > < / a > < span class = "lineno" > 8< / span >   < span class = "comment" > // Unless required by applicable law or agreed to in writing, software< / span > < / div >
< div class = "line" > < a name = "l00009" > < / a > < span class = "lineno" > 9< / span >   < span class = "comment" > // distributed under the License is distributed on an " AS IS" BASIS,< / span > < / div >
< div class = "line" > < a name = "l00010" > < / a > < span class = "lineno" > 10< / span >   < span class = "comment" > // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.< / span > < / div >
< div class = "line" > < a name = "l00011" > < / a > < span class = "lineno" > 11< / span >   < span class = "comment" > // See the License for the specific language governing permissions and< / span > < / div >
< div class = "line" > < a name = "l00012" > < / a > < span class = "lineno" > 12< / span >   < span class = "comment" > // limitations under the License.< / span > < / div >
< div class = "line" > < a name = "l00013" > < / a > < span class = "lineno" > 13< / span >   < / div >
< div class = "line" > < a name = "l00014" > < / a > < span class = "lineno" > 14< / span >   < span class = "preprocessor" > #include " < a class = "code" href = "min__cost__flow_8h.html" > ortools/graph/min_cost_flow.h< / a > " < / span > < / div >
< div class = "line" > < a name = "l00015" > < / a > < span class = "lineno" > 15< / span >   < / div >
< div class = "line" > < a name = "l00016" > < / a > < span class = "lineno" > 16< / span >   < span class = "preprocessor" > #include < algorithm> < / span > < / div >
< div class = "line" > < a name = "l00017" > < / a > < span class = "lineno" > 17< / span >   < span class = "preprocessor" > #include < cmath> < / span > < / div >
< div class = "line" > < a name = "l00018" > < / a > < span class = "lineno" > 18< / span >   < span class = "preprocessor" > #include < limits> < / span > < / div >
< div class = "line" > < a name = "l00019" > < / a > < span class = "lineno" > 19< / span >   < / div >
< div class = "line" > < a name = "l00020" > < / a > < span class = "lineno" > 20< / span >   < span class = "preprocessor" > #include " absl/strings/str_format.h" < / span > < / div >
< div class = "line" > < a name = "l00021" > < / a > < span class = "lineno" > 21< / span >   < span class = "preprocessor" > #include " < a class = "code" href = "commandlineflags_8h.html" > ortools/base/commandlineflags.h< / a > " < / span > < / div >
< div class = "line" > < a name = "l00022" > < / a > < span class = "lineno" > 22< / span >   < span class = "preprocessor" > #include " < a class = "code" href = "mathutil_8h.html" > ortools/base/mathutil.h< / a > " < / span > < / div >
< div class = "line" > < a name = "l00023" > < / a > < span class = "lineno" > 23< / span >   < span class = "preprocessor" > #include " < a class = "code" href = "graph_8h.html" > ortools/graph/graph.h< / a > " < / span > < / div >
< div class = "line" > < a name = "l00024" > < / a > < span class = "lineno" > 24< / span >   < span class = "preprocessor" > #include " < a class = "code" href = "graphs_8h.html" > ortools/graph/graphs.h< / a > " < / span > < / div >
< div class = "line" > < a name = "l00025" > < / a > < span class = "lineno" > 25< / span >   < span class = "preprocessor" > #include " < a class = "code" href = "max__flow_8h.html" > ortools/graph/max_flow.h< / a > " < / span > < / div >
< div class = "line" > < a name = "l00026" > < / a > < span class = "lineno" > 26< / span >   < / div >
< div class = "line" > < a name = "l00027" > < / a > < span class = "lineno" > 27< / span >   < span class = "comment" > // TODO(user): Remove these flags and expose the parameters in the API.< / span > < / div >
< div class = "line" > < a name = "l00028" > < / a > < span class = "lineno" > 28< / span >   < span class = "comment" > // New clients, please do not use these flags!< / span > < / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00029" > < / a > < span class = "lineno" > < a class = "line" href = "min__cost__flow_8cc.html#ab29882272822b270edac48bc8b0ab14e" > 29< / a > < / span >   < a class = "code" href = "min__cost__flow_8cc.html#ab29882272822b270edac48bc8b0ab14e" > ABSL_FLAG< / a > (int64_t, min_cost_flow_alpha, 5,< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00030" > < / a > < span class = "lineno" > 30< / span >   < span class = "stringliteral" > " Divide factor for epsilon at each refine step." < / span > );< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00031" > < / a > < span class = "lineno" > < a class = "line" href = "min__cost__flow_8cc.html#ab654e743d095008fe5ad6732d075b277" > 31< / a > < / span >   < a class = "code" href = "min__cost__flow_8cc.html#ab29882272822b270edac48bc8b0ab14e" > ABSL_FLAG< / a > (< span class = "keywordtype" > bool< / span > , min_cost_flow_check_feasibility, < span class = "keyword" > true< / span > ,< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00032" > < / a > < span class = "lineno" > 32< / span >   < span class = "stringliteral" > " Check that the graph has enough capacity to send all supplies " < / span > < / div >
< div class = "line" > < a name = "l00033" > < / a > < span class = "lineno" > 33< / span >   < span class = "stringliteral" > " and serve all demands. Also check that the sum of supplies " < / span > < / div >
< div class = "line" > < a name = "l00034" > < / a > < span class = "lineno" > 34< / span >   < span class = "stringliteral" > " is equal to the sum of demands." < / span > );< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00035" > < / a > < span class = "lineno" > < a class = "line" href = "min__cost__flow_8cc.html#a803ace201395b02478bfde7e58d49eaf" > 35< / a > < / span >   < a class = "code" href = "min__cost__flow_8cc.html#ab29882272822b270edac48bc8b0ab14e" > ABSL_FLAG< / a > (< span class = "keywordtype" > bool< / span > , min_cost_flow_check_balance, < span class = "keyword" > true< / span > ,< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00036" > < / a > < span class = "lineno" > 36< / span >   < span class = "stringliteral" > " Check that the sum of supplies is equal to the sum of demands." < / span > );< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00037" > < / a > < span class = "lineno" > < a class = "line" href = "min__cost__flow_8cc.html#aa70ea6448e7fd69d81e2021d94a2eab7" > 37< / a > < / span >   < a class = "code" href = "min__cost__flow_8cc.html#ab29882272822b270edac48bc8b0ab14e" > ABSL_FLAG< / a > (< span class = "keywordtype" > bool< / span > , min_cost_flow_check_costs, < span class = "keyword" > true< / span > ,< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00038" > < / a > < span class = "lineno" > 38< / span >   < span class = "stringliteral" > " Check that the magnitude of the costs will not exceed the " < / span > < / div >
< div class = "line" > < a name = "l00039" > < / a > < span class = "lineno" > 39< / span >   < span class = "stringliteral" > " precision of the machine when scaled (multiplied) by the number " < / span > < / div >
< div class = "line" > < a name = "l00040" > < / a > < span class = "lineno" > 40< / span >   < span class = "stringliteral" > " of nodes" < / span > );< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00041" > < / a > < span class = "lineno" > < a class = "line" href = "min__cost__flow_8cc.html#a12b05c4219aa2ee08e03b72c37c3e87e" > 41< / a > < / span >   < a class = "code" href = "min__cost__flow_8cc.html#ab29882272822b270edac48bc8b0ab14e" > ABSL_FLAG< / a > (< span class = "keywordtype" > bool< / span > , min_cost_flow_check_result, < span class = "keyword" > true< / span > ,< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00042" > < / a > < span class = "lineno" > 42< / span >   < span class = "stringliteral" > " Check that the result is valid." < / span > );< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00043" > < / a > < span class = "lineno" > 43< / span >   < / div >
< div class = "line" > < a name = "l00044" > < / a > < span class = "lineno" > 44< / span >   < span class = "keyword" > namespace < / span > < a class = "code" href = "namespaceoperations__research.html" > operations_research< / a > {< / div >
< div class = "line" > < a name = "l00045" > < / a > < span class = "lineno" > 45< / span >   < / div >
< div class = "line" > < a name = "l00046" > < / a > < span class = "lineno" > 46< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00047" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_min_cost_flow.html#a34e6d785d3dc22ee8d54bad8f1cf6cc2" > 47< / a > < / span >   < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a34e6d785d3dc22ee8d54bad8f1cf6cc2" > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::GenericMinCostFlow< / a > (< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00048" > < / a > < span class = "lineno" > 48< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceutil.html#a2f76166dbe0c4055a1f256235ad00478" > Graph< / a > * graph)< / div >
< div class = "line" > < a name = "l00049" > < / a > < span class = "lineno" > 49< / span >   : graph_(graph),< / div >
< div class = "line" > < a name = "l00050" > < / a > < span class = "lineno" > 50< / span >   node_excess_(),< / div >
< div class = "line" > < a name = "l00051" > < / a > < span class = "lineno" > 51< / span >   node_potential_(),< / div >
< div class = "line" > < a name = "l00052" > < / a > < span class = "lineno" > 52< / span >   residual_arc_capacity_(),< / div >
< div class = "line" > < a name = "l00053" > < / a > < span class = "lineno" > 53< / span >   first_admissible_arc_(),< / div >
< div class = "line" > < a name = "l00054" > < / a > < span class = "lineno" > 54< / span >   active_nodes_(),< / div >
< div class = "line" > < a name = "l00055" > < / a > < span class = "lineno" > 55< / span >   epsilon_(0),< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00056" > < / a > < span class = "lineno" > 56< / span >   alpha_(< a class = "code" href = "namespaceabsl.html" > absl< / a > ::GetFlag(FLAGS_min_cost_flow_alpha)),< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00057" > < / a > < span class = "lineno" > 57< / span >   cost_scaling_factor_(1),< / div >
< div class = "line" > < a name = "l00058" > < / a > < span class = "lineno" > 58< / span >   scaled_arc_unit_cost_(),< / div >
< div class = "line" > < a name = "l00059" > < / a > < span class = "lineno" > 59< / span >   total_flow_cost_(0),< / div >
< div class = "line" > < a name = "l00060" > < / a > < span class = "lineno" > 60< / span >   status_(NOT_SOLVED),< / div >
< div class = "line" > < a name = "l00061" > < / a > < span class = "lineno" > 61< / span >   initial_node_excess_(),< / div >
< div class = "line" > < a name = "l00062" > < / a > < span class = "lineno" > 62< / span >   feasible_node_excess_(),< / div >
< div class = "line" > < a name = "l00063" > < / a > < span class = "lineno" > 63< / span >   stats_(< span class = "stringliteral" > " MinCostFlow" < / span > ),< / div >
< div class = "line" > < a name = "l00064" > < / a > < span class = "lineno" > 64< / span >   feasibility_checked_(false),< / div >
< div class = "line" > < a name = "l00065" > < / a > < span class = "lineno" > 65< / span >   use_price_update_(false),< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00066" > < / a > < span class = "lineno" > 66< / span >   check_feasibility_(< a class = "code" href = "namespaceabsl.html" > absl< / a > ::GetFlag(FLAGS_min_cost_flow_check_feasibility)) {< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00067" > < / a > < span class = "lineno" > 67< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > max_num_nodes = < a class = "code" href = "structoperations__research_1_1_graphs.html#a9d530d16efbea1a29d61cb0325980a50" > Graphs< Graph> ::NodeReservation< / a > (*graph_);< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00068" > < / a > < span class = "lineno" > 68< / span >   < span class = "keywordflow" > if< / span > (max_num_nodes > 0) {< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00069" > < / a > < span class = "lineno" > 69< / span >   node_excess_.< a class = "code" href = "classoperations__research_1_1_z_vector.html#a6d0d87121f91870c74db35aa4edfdc69" > Reserve< / a > (0, max_num_nodes - 1);< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00070" > < / a > < span class = "lineno" > 70< / span >   node_excess_.< a class = "code" href = "classoperations__research_1_1_z_vector.html#ad5721f29af64d2e2ae014ead96192591" > SetAll< / a > (0);< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00071" > < / a > < span class = "lineno" > 71< / span >   node_potential_.< a class = "code" href = "classoperations__research_1_1_z_vector.html#a6d0d87121f91870c74db35aa4edfdc69" > Reserve< / a > (0, max_num_nodes - 1);< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00072" > < / a > < span class = "lineno" > 72< / span >   node_potential_.< a class = "code" href = "classoperations__research_1_1_z_vector.html#ad5721f29af64d2e2ae014ead96192591" > SetAll< / a > (0);< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00073" > < / a > < span class = "lineno" > 73< / span >   first_admissible_arc_.< a class = "code" href = "classoperations__research_1_1_z_vector.html#a6d0d87121f91870c74db35aa4edfdc69" > Reserve< / a > (0, max_num_nodes - 1);< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00074" > < / a > < span class = "lineno" > 74< / span >   first_admissible_arc_.< a class = "code" href = "classoperations__research_1_1_z_vector.html#ad5721f29af64d2e2ae014ead96192591" > SetAll< / a > (Graph::kNilArc);< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00075" > < / a > < span class = "lineno" > 75< / span >   initial_node_excess_.< a class = "code" href = "classoperations__research_1_1_z_vector.html#a6d0d87121f91870c74db35aa4edfdc69" > Reserve< / a > (0, max_num_nodes - 1);< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00076" > < / a > < span class = "lineno" > 76< / span >   initial_node_excess_.< a class = "code" href = "classoperations__research_1_1_z_vector.html#ad5721f29af64d2e2ae014ead96192591" > SetAll< / a > (0);< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00077" > < / a > < span class = "lineno" > 77< / span >   feasible_node_excess_.< a class = "code" href = "classoperations__research_1_1_z_vector.html#a6d0d87121f91870c74db35aa4edfdc69" > Reserve< / a > (0, max_num_nodes - 1);< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00078" > < / a > < span class = "lineno" > 78< / span >   feasible_node_excess_.< a class = "code" href = "classoperations__research_1_1_z_vector.html#ad5721f29af64d2e2ae014ead96192591" > SetAll< / a > (0);< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00079" > < / a > < span class = "lineno" > 79< / span >   }< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00080" > < / a > < span class = "lineno" > 80< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > max_num_arcs = < a class = "code" href = "structoperations__research_1_1_graphs.html#a42fb6857e088a176a53232b910715260" > Graphs< Graph> ::ArcReservation< / a > (*graph_);< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00081" > < / a > < span class = "lineno" > 81< / span >   < span class = "keywordflow" > if< / span > (max_num_arcs > 0) {< / div >
< div class = "line" > < a name = "l00082" > < / a > < span class = "lineno" > 82< / span >   residual_arc_capacity_.Reserve(-max_num_arcs, max_num_arcs - 1);< / div >
< div class = "line" > < a name = "l00083" > < / a > < span class = "lineno" > 83< / span >   residual_arc_capacity_.SetAll(0);< / div >
< div class = "line" > < a name = "l00084" > < / a > < span class = "lineno" > 84< / span >   scaled_arc_unit_cost_.Reserve(-max_num_arcs, max_num_arcs - 1);< / div >
< div class = "line" > < a name = "l00085" > < / a > < span class = "lineno" > 85< / span >   scaled_arc_unit_cost_.SetAll(0);< / div >
< div class = "line" > < a name = "l00086" > < / a > < span class = "lineno" > 86< / span >   }< / div >
< div class = "line" > < a name = "l00087" > < / a > < span class = "lineno" > 87< / span >   }< / div >
< div class = "line" > < a name = "l00088" > < / a > < span class = "lineno" > 88< / span >   < / div >
< div class = "line" > < a name = "l00089" > < / a > < span class = "lineno" > 89< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00090" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_min_cost_flow.html#a7cd2dc0776a9f339b56ffac996a7df8c" > 90< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a7cd2dc0776a9f339b56ffac996a7df8c" > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::SetNodeSupply< / a > (< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00091" > < / a > < span class = "lineno" > 91< / span >   < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > node, < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > supply) {< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00092" > < / a > < span class = "lineno" > 92< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (graph_-> IsNodeValid(node));< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00093" > < / a > < span class = "lineno" > 93< / span >   node_excess_.Set(node, supply);< / div >
< div class = "line" > < a name = "l00094" > < / a > < span class = "lineno" > 94< / span >   initial_node_excess_.Set(node, supply);< / div >
< div class = "line" > < a name = "l00095" > < / a > < span class = "lineno" > 95< / span >   status_ = NOT_SOLVED;< / div >
< div class = "line" > < a name = "l00096" > < / a > < span class = "lineno" > 96< / span >   feasibility_checked_ = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00097" > < / a > < span class = "lineno" > 97< / span >   }< / div >
< div class = "line" > < a name = "l00098" > < / a > < span class = "lineno" > 98< / span >   < / div >
< div class = "line" > < a name = "l00099" > < / a > < span class = "lineno" > 99< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00100" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_min_cost_flow.html#ab7f4041c8667d63761aecb9657823945" > 100< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#ab7f4041c8667d63761aecb9657823945" > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::SetArcUnitCost< / a > (< / div >
< div class = "line" > < a name = "l00101" > < / a > < span class = "lineno" > 101< / span >   < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > arc, ArcScaledCostType unit_cost) {< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00102" > < / a > < span class = "lineno" > 102< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (IsArcDirect(arc));< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00103" > < / a > < span class = "lineno" > 103< / span >   scaled_arc_unit_cost_.Set(arc, unit_cost);< / div >
< div class = "line" > < a name = "l00104" > < / a > < span class = "lineno" > 104< / span >   scaled_arc_unit_cost_.Set(Opposite(arc), -scaled_arc_unit_cost_[arc]);< / div >
< div class = "line" > < a name = "l00105" > < / a > < span class = "lineno" > 105< / span >   status_ = NOT_SOLVED;< / div >
< div class = "line" > < a name = "l00106" > < / a > < span class = "lineno" > 106< / span >   feasibility_checked_ = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00107" > < / a > < span class = "lineno" > 107< / span >   }< / div >
< div class = "line" > < a name = "l00108" > < / a > < span class = "lineno" > 108< / span >   < / div >
< div class = "line" > < a name = "l00109" > < / a > < span class = "lineno" > 109< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00110" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_min_cost_flow.html#aeb6622ffa760bc9403144736f8ac4ad4" > 110< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#aeb6622ffa760bc9403144736f8ac4ad4" > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::SetArcCapacity< / a > (< / div >
< div class = "line" > < a name = "l00111" > < / a > < span class = "lineno" > 111< / span >   < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > arc, ArcFlowType new_capacity) {< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00112" > < / a > < span class = "lineno" > 112< / span >   < a class = "code" href = "base_2logging_8h.html#a4395e95bab44e222cb2e77251017a0e2" > DCHECK_LE< / a > (0, new_capacity);< / div >
< div class = "line" > < a name = "l00113" > < / a > < span class = "lineno" > 113< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (IsArcDirect(arc));< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00114" > < / a > < span class = "lineno" > 114< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > free_capacity = residual_arc_capacity_[arc];< / div >
< div class = "line" > < a name = "l00115" > < / a > < span class = "lineno" > 115< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > capacity_delta = new_capacity - Capacity(arc);< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00116" > < / a > < span class = "lineno" > 116< / span >   < span class = "keywordflow" > if< / span > (capacity_delta == 0) {< / div >
< div class = "line" > < a name = "l00117" > < / a > < span class = "lineno" > 117< / span >   < span class = "keywordflow" > return< / span > ; < span class = "comment" > // Nothing to do.< / span > < / div >
< div class = "line" > < a name = "l00118" > < / a > < span class = "lineno" > 118< / span >   }< / div >
< div class = "line" > < a name = "l00119" > < / a > < span class = "lineno" > 119< / span >   status_ = NOT_SOLVED;< / div >
< div class = "line" > < a name = "l00120" > < / a > < span class = "lineno" > 120< / span >   feasibility_checked_ = < span class = "keyword" > false< / span > ;< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00121" > < / a > < span class = "lineno" > 121< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > new_availability = free_capacity + capacity_delta;< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00122" > < / a > < span class = "lineno" > 122< / span >   < span class = "keywordflow" > if< / span > (new_availability > = 0) {< / div >
< div class = "line" > < a name = "l00123" > < / a > < span class = "lineno" > 123< / span >   < span class = "comment" > // The above condition is true when one of two following holds:< / span > < / div >
< div class = "line" > < a name = "l00124" > < / a > < span class = "lineno" > 124< / span >   < span class = "comment" > // 1/ (capacity_delta > 0), meaning we are increasing the capacity< / span > < / div >
< div class = "line" > < a name = "l00125" > < / a > < span class = "lineno" > 125< / span >   < span class = "comment" > // 2/ (capacity_delta < 0 & & free_capacity + capacity_delta > = 0)< / span > < / div >
< div class = "line" > < a name = "l00126" > < / a > < span class = "lineno" > 126< / span >   < span class = "comment" > // meaning we are reducing the capacity, but that the capacity< / span > < / div >
< div class = "line" > < a name = "l00127" > < / a > < span class = "lineno" > 127< / span >   < span class = "comment" > // reduction is not larger than the free capacity.< / span > < / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00128" > < / a > < span class = "lineno" > 128< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > ((capacity_delta > 0) ||< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00129" > < / a > < span class = "lineno" > 129< / span >   (capacity_delta < 0 & & new_availability > = 0));< / div >
< div class = "line" > < a name = "l00130" > < / a > < span class = "lineno" > 130< / span >   residual_arc_capacity_.Set(arc, new_availability);< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00131" > < / a > < span class = "lineno" > 131< / span >   < a class = "code" href = "base_2logging_8h.html#a4395e95bab44e222cb2e77251017a0e2" > DCHECK_LE< / a > (0, residual_arc_capacity_[arc]);< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00132" > < / a > < span class = "lineno" > 132< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00133" > < / a > < span class = "lineno" > 133< / span >   < span class = "comment" > // We have to reduce the flow on the arc, and update the excesses< / span > < / div >
< div class = "line" > < a name = "l00134" > < / a > < span class = "lineno" > 134< / span >   < span class = "comment" > // accordingly.< / span > < / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00135" > < / a > < span class = "lineno" > 135< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > flow = residual_arc_capacity_[Opposite(arc)];< / div >
< div class = "line" > < a name = "l00136" > < / a > < span class = "lineno" > 136< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > flow_excess = flow - new_capacity;< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00137" > < / a > < span class = "lineno" > 137< / span >   residual_arc_capacity_.Set(arc, 0);< / div >
< div class = "line" > < a name = "l00138" > < / a > < span class = "lineno" > 138< / span >   residual_arc_capacity_.Set(Opposite(arc), new_capacity);< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00139" > < / a > < span class = "lineno" > 139< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > < a class = "code" href = "routing__flow_8cc.html#a64e7efc5529154ba56903e75f5300990" > tail< / a > = Tail(arc);< / div >
< div class = "line" > < a name = "l00140" > < / a > < span class = "lineno" > 140< / span >   node_excess_.Set(< a class = "code" href = "routing__flow_8cc.html#a64e7efc5529154ba56903e75f5300990" > tail< / a > , node_excess_[< a class = "code" href = "routing__flow_8cc.html#a64e7efc5529154ba56903e75f5300990" > tail< / a > ] + flow_excess);< / div >
< div class = "line" > < a name = "l00141" > < / a > < span class = "lineno" > 141< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > < a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > = Head(arc);< / div >
< div class = "line" > < a name = "l00142" > < / a > < span class = "lineno" > 142< / span >   node_excess_.Set(< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > , node_excess_[< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ] - flow_excess);< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00143" > < / a > < span class = "lineno" > 143< / span >   < a class = "code" href = "base_2logging_8h.html#a4395e95bab44e222cb2e77251017a0e2" > DCHECK_LE< / a > (0, residual_arc_capacity_[arc]);< / div >
< div class = "line" > < a name = "l00144" > < / a > < span class = "lineno" > 144< / span >   < a class = "code" href = "base_2logging_8h.html#a4395e95bab44e222cb2e77251017a0e2" > DCHECK_LE< / a > (0, residual_arc_capacity_[Opposite(arc)]);< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00145" > < / a > < span class = "lineno" > 145< / span >   }< / div >
< div class = "line" > < a name = "l00146" > < / a > < span class = "lineno" > 146< / span >   }< / div >
< div class = "line" > < a name = "l00147" > < / a > < span class = "lineno" > 147< / span >   < / div >
< div class = "line" > < a name = "l00148" > < / a > < span class = "lineno" > 148< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00149" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_min_cost_flow.html#a89b020eea8abc71434d63071a1e38527" > 149< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a89b020eea8abc71434d63071a1e38527" > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::SetArcFlow< / a > (< / div >
< div class = "line" > < a name = "l00150" > < / a > < span class = "lineno" > 150< / span >   < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > arc, ArcFlowType new_flow) {< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00151" > < / a > < span class = "lineno" > 151< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (IsArcValid(arc));< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00152" > < / a > < span class = "lineno" > 152< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > < a class = "code" href = "routing__flow_8cc.html#a2acb49f4df5288066c43610bede123ec" > capacity< / a > = Capacity(arc);< / div >
< div class = "line" > < a name = "l00153" > < / a > < span class = "lineno" > 153< / span >   < a class = "code" href = "base_2logging_8h.html#aae2dc65d9ea248d54bf39daa986dd295" > DCHECK_GE< / a > (< a class = "code" href = "routing__flow_8cc.html#a2acb49f4df5288066c43610bede123ec" > capacity< / a > , new_flow);< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00154" > < / a > < span class = "lineno" > 154< / span >   residual_arc_capacity_.Set(Opposite(arc), new_flow);< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00155" > < / a > < span class = "lineno" > 155< / span >   residual_arc_capacity_.Set(arc, < a class = "code" href = "routing__flow_8cc.html#a2acb49f4df5288066c43610bede123ec" > capacity< / a > - new_flow);< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00156" > < / a > < span class = "lineno" > 156< / span >   status_ = NOT_SOLVED;< / div >
< div class = "line" > < a name = "l00157" > < / a > < span class = "lineno" > 157< / span >   feasibility_checked_ = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00158" > < / a > < span class = "lineno" > 158< / span >   }< / div >
< div class = "line" > < a name = "l00159" > < / a > < span class = "lineno" > 159< / span >   < / div >
< div class = "line" > < a name = "l00160" > < / a > < span class = "lineno" > 160< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00161" > < / a > < span class = "lineno" > 161< / span >   < span class = "keywordtype" > bool< / span > < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html" > GenericMinCostFlow< / a > < < a class = "code" href = "namespaceutil.html#a2f76166dbe0c4055a1f256235ad00478" > Graph< / a > , ArcFlowType,< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00162" > < / a > < span class = "lineno" > 162< / span >   ArcScaledCostType> ::CheckInputConsistency()< span class = "keyword" > const < / span > {< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00163" > < / a > < span class = "lineno" > 163< / span >   < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > total_supply = 0;< / div >
< div class = "line" > < a name = "l00164" > < / a > < span class = "lineno" > 164< / span >   uint64_t max_capacity = 0; < span class = "comment" > // uint64_t because it is positive and will be< / span > < / div >
< div class = "line" > < a name = "l00165" > < / a > < span class = "lineno" > 165< / span >   < span class = "comment" > // used to check against FlowQuantity overflows.< / span > < / div >
< div class = "line" > < a name = "l00166" > < / a > < span class = "lineno" > 166< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc = 0; arc < graph_-> num_arcs(); ++arc) {< / div >
< div class = "line" > < a name = "l00167" > < / a > < span class = "lineno" > 167< / span >   < span class = "keyword" > const< / span > uint64_t < a class = "code" href = "routing__flow_8cc.html#a2acb49f4df5288066c43610bede123ec" > capacity< / a > =< / div >
< div class = "line" > < a name = "l00168" > < / a > < span class = "lineno" > 168< / span >   < span class = "keyword" > static_cast< < / span > uint64_t< span class = "keyword" > > < / span > (residual_arc_capacity_[arc]);< / div >
< div class = "line" > < a name = "l00169" > < / a > < span class = "lineno" > 169< / span >   max_capacity = < a class = "code" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > (< a class = "code" href = "routing__flow_8cc.html#a2acb49f4df5288066c43610bede123ec" > capacity< / a > , max_capacity);< / div >
< div class = "line" > < a name = "l00170" > < / a > < span class = "lineno" > 170< / span >   }< / div >
< div class = "line" > < a name = "l00171" > < / a > < span class = "lineno" > 171< / span >   uint64_t total_flow = 0; < span class = "comment" > // uint64_t for the same reason as max_capacity.< / span > < / div >
< div class = "line" > < a name = "l00172" > < / a > < span class = "lineno" > 172< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > node = 0; node < graph_-> num_nodes(); ++node) {< / div >
< div class = "line" > < a name = "l00173" > < / a > < span class = "lineno" > 173< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > excess = node_excess_[node];< / div >
< div class = "line" > < a name = "l00174" > < / a > < span class = "lineno" > 174< / span >   total_supply += excess;< / div >
< div class = "line" > < a name = "l00175" > < / a > < span class = "lineno" > 175< / span >   < span class = "keywordflow" > if< / span > (excess > 0) {< / div >
< div class = "line" > < a name = "l00176" > < / a > < span class = "lineno" > 176< / span >   total_flow += excess;< / div >
< div class = "line" > < a name = "l00177" > < / a > < span class = "lineno" > 177< / span >   < span class = "keywordflow" > if< / span > (< a class = "code" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::numeric_limits< FlowQuantity> ::max< / a > () < < / div >
< div class = "line" > < a name = "l00178" > < / a > < span class = "lineno" > 178< / span >   max_capacity + total_flow) {< / div >
< div class = "line" > < a name = "l00179" > < / a > < span class = "lineno" > 179< / span >   < a class = "code" href = "base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae" > LOG< / a > (DFATAL) < < < span class = "stringliteral" > " Input consistency error: max capacity + flow exceed " < / span > < / div >
< div class = "line" > < a name = "l00180" > < / a > < span class = "lineno" > 180< / span >   < < < span class = "stringliteral" > " precision" < / span > ;< / div >
< div class = "line" > < a name = "l00181" > < / a > < span class = "lineno" > 181< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00182" > < / a > < span class = "lineno" > 182< / span >   }< / div >
< div class = "line" > < a name = "l00183" > < / a > < span class = "lineno" > 183< / span >   }< / div >
< div class = "line" > < a name = "l00184" > < / a > < span class = "lineno" > 184< / span >   }< / div >
< div class = "line" > < a name = "l00185" > < / a > < span class = "lineno" > 185< / span >   < span class = "keywordflow" > if< / span > (total_supply != 0) {< / div >
< div class = "line" > < a name = "l00186" > < / a > < span class = "lineno" > 186< / span >   < a class = "code" href = "base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae" > LOG< / a > (DFATAL) < < < span class = "stringliteral" > " Input consistency error: unbalanced problem" < / span > ;< / div >
< div class = "line" > < a name = "l00187" > < / a > < span class = "lineno" > 187< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00188" > < / a > < span class = "lineno" > 188< / span >   }< / div >
< div class = "line" > < a name = "l00189" > < / a > < span class = "lineno" > 189< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00190" > < / a > < span class = "lineno" > 190< / span >   }< / div >
< div class = "line" > < a name = "l00191" > < / a > < span class = "lineno" > 191< / span >   < / div >
< div class = "line" > < a name = "l00192" > < / a > < span class = "lineno" > 192< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00193" > < / a > < span class = "lineno" > 193< / span >   < span class = "keywordtype" > bool< / span > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::CheckResult()< span class = "keyword" > < / span > < / div >
< div class = "line" > < a name = "l00194" > < / a > < span class = "lineno" > 194< / span >   < span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00195" > < / a > < span class = "lineno" > 195< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > node = 0; node < graph_-> num_nodes(); ++node) {< / div >
< div class = "line" > < a name = "l00196" > < / a > < span class = "lineno" > 196< / span >   < span class = "keywordflow" > if< / span > (node_excess_[node] != 0) {< / div >
< div class = "line" > < a name = "l00197" > < / a > < span class = "lineno" > 197< / span >   < a class = "code" href = "base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae" > LOG< / a > (DFATAL) < < < span class = "stringliteral" > " node_excess_[" < / span > < < node < < < span class = "stringliteral" > " ] != 0" < / span > ;< / div >
< div class = "line" > < a name = "l00198" > < / a > < span class = "lineno" > 198< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00199" > < / a > < span class = "lineno" > 199< / span >   }< / div >
< div class = "line" > < a name = "l00200" > < / a > < span class = "lineno" > 200< / span >   < span class = "keywordflow" > for< / span > (OutgoingOrOppositeIncomingArcIterator it(*graph_, node); it.Ok();< / div >
< div class = "line" > < a name = "l00201" > < / a > < span class = "lineno" > 201< / span >   it.Next()) {< / div >
< div class = "line" > < a name = "l00202" > < / a > < span class = "lineno" > 202< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc = it.Index();< / div >
< div class = "line" > < a name = "l00203" > < / a > < span class = "lineno" > 203< / span >   < span class = "keywordtype" > bool< / span > ok = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00204" > < / a > < span class = "lineno" > 204< / span >   < span class = "keywordflow" > if< / span > (residual_arc_capacity_[arc] < 0) {< / div >
< div class = "line" > < a name = "l00205" > < / a > < span class = "lineno" > 205< / span >   < a class = "code" href = "base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae" > LOG< / a > (DFATAL) < < < span class = "stringliteral" > " residual_arc_capacity_[" < / span > < < arc < < < span class = "stringliteral" > " ] < 0" < / span > ;< / div >
< div class = "line" > < a name = "l00206" > < / a > < span class = "lineno" > 206< / span >   ok = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00207" > < / a > < span class = "lineno" > 207< / span >   }< / div >
< div class = "line" > < a name = "l00208" > < / a > < span class = "lineno" > 208< / span >   < span class = "keywordflow" > if< / span > (residual_arc_capacity_[arc] > 0 & & ReducedCost(arc) < -epsilon_) {< / div >
< div class = "line" > < a name = "l00209" > < / a > < span class = "lineno" > 209< / span >   < a class = "code" href = "base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae" > LOG< / a > (DFATAL) < < < span class = "stringliteral" > " residual_arc_capacity_[" < / span > < < arc< / div >
< div class = "line" > < a name = "l00210" > < / a > < span class = "lineno" > 210< / span >   < < < span class = "stringliteral" > " ] > 0 & & ReducedCost(" < / span > < < arc < < < span class = "stringliteral" > " ) < " < / span > < < -epsilon_< / div >
< div class = "line" > < a name = "l00211" > < / a > < span class = "lineno" > 211< / span >   < < < span class = "stringliteral" > " . (epsilon_ = " < / span > < < epsilon_ < < < span class = "stringliteral" > " )." < / span > ;< / div >
< div class = "line" > < a name = "l00212" > < / a > < span class = "lineno" > 212< / span >   ok = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00213" > < / a > < span class = "lineno" > 213< / span >   }< / div >
< div class = "line" > < a name = "l00214" > < / a > < span class = "lineno" > 214< / span >   < span class = "keywordflow" > if< / span > (!ok) {< / div >
< div class = "line" > < a name = "l00215" > < / a > < span class = "lineno" > 215< / span >   < a class = "code" href = "base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae" > LOG< / a > (DFATAL) < < DebugString(< span class = "stringliteral" > " CheckResult " < / span > , arc);< / div >
< div class = "line" > < a name = "l00216" > < / a > < span class = "lineno" > 216< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00217" > < / a > < span class = "lineno" > 217< / span >   }< / div >
< div class = "line" > < a name = "l00218" > < / a > < span class = "lineno" > 218< / span >   }< / div >
< div class = "line" > < a name = "l00219" > < / a > < span class = "lineno" > 219< / span >   }< / div >
< div class = "line" > < a name = "l00220" > < / a > < span class = "lineno" > 220< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00221" > < / a > < span class = "lineno" > 221< / span >   }< / div >
< div class = "line" > < a name = "l00222" > < / a > < span class = "lineno" > 222< / span >   < / div >
< div class = "line" > < a name = "l00223" > < / a > < span class = "lineno" > 223< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00224" > < / a > < span class = "lineno" > 224< / span >   < span class = "keywordtype" > bool< / span > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::CheckCostRange()< span class = "keyword" > < / span > < / div >
< div class = "line" > < a name = "l00225" > < / a > < span class = "lineno" > 225< / span >   < span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00226" > < / a > < span class = "lineno" > 226< / span >   < a class = "code" href = "namespaceoperations__research.html#aee97ac67f280d35acdef2c5d461a85c3" > CostValue< / a > min_cost_magnitude = < a class = "code" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::numeric_limits< CostValue> ::max< / a > ();< / div >
< div class = "line" > < a name = "l00227" > < / a > < span class = "lineno" > 227< / span >   < a class = "code" href = "namespaceoperations__research.html#aee97ac67f280d35acdef2c5d461a85c3" > CostValue< / a > max_cost_magnitude = 0;< / div >
< div class = "line" > < a name = "l00228" > < / a > < span class = "lineno" > 228< / span >   < span class = "comment" > // Traverse the initial arcs of the graph:< / span > < / div >
< div class = "line" > < a name = "l00229" > < / a > < span class = "lineno" > 229< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc = 0; arc < graph_-> num_arcs(); ++arc) {< / div >
< div class = "line" > < a name = "l00230" > < / a > < span class = "lineno" > 230< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#aee97ac67f280d35acdef2c5d461a85c3" > CostValue< / a > cost_magnitude = < a class = "code" href = "classoperations__research_1_1_math_util.html#a5a6f14696b2a09c97b58e4f0989b19e7" > MathUtil::Abs< / a > (scaled_arc_unit_cost_[arc]);< / div >
< div class = "line" > < a name = "l00231" > < / a > < span class = "lineno" > 231< / span >   max_cost_magnitude = < a class = "code" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > (max_cost_magnitude, cost_magnitude);< / div >
< div class = "line" > < a name = "l00232" > < / a > < span class = "lineno" > 232< / span >   < span class = "keywordflow" > if< / span > (cost_magnitude != 0.0) {< / div >
< div class = "line" > < a name = "l00233" > < / a > < span class = "lineno" > 233< / span >   min_cost_magnitude = < a class = "code" href = "alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045" > std::min< / a > (min_cost_magnitude, cost_magnitude);< / div >
< div class = "line" > < a name = "l00234" > < / a > < span class = "lineno" > 234< / span >   }< / div >
< div class = "line" > < a name = "l00235" > < / a > < span class = "lineno" > 235< / span >   }< / div >
< div class = "line" > < a name = "l00236" > < / a > < span class = "lineno" > 236< / span >   < a class = "code" href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > (3) < < < span class = "stringliteral" > " Min cost magnitude = " < / span > < < min_cost_magnitude< / div >
< div class = "line" > < a name = "l00237" > < / a > < span class = "lineno" > 237< / span >   < < < span class = "stringliteral" > " , Max cost magnitude = " < / span > < < max_cost_magnitude;< / div >
< div class = "line" > < a name = "l00238" > < / a > < span class = "lineno" > 238< / span >   < span class = "preprocessor" > #if !defined(_MSC_VER)< / span > < / div >
< div class = "line" > < a name = "l00239" > < / a > < span class = "lineno" > 239< / span >   < span class = "keywordflow" > if< / span > (log(< a class = "code" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::numeric_limits< CostValue> ::max< / a > ()) < < / div >
< div class = "line" > < a name = "l00240" > < / a > < span class = "lineno" > 240< / span >   log(max_cost_magnitude + 1) + log(graph_-> num_nodes() + 1)) {< / div >
< div class = "line" > < a name = "l00241" > < / a > < span class = "lineno" > 241< / span >   < a class = "code" href = "base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae" > LOG< / a > (DFATAL) < < < span class = "stringliteral" > " Maximum cost magnitude " < / span > < < max_cost_magnitude < < < span class = "stringliteral" > " is too " < / span > < / div >
< div class = "line" > < a name = "l00242" > < / a > < span class = "lineno" > 242< / span >   < < < span class = "stringliteral" > " high for the number of nodes. Try changing the data." < / span > ;< / div >
< div class = "line" > < a name = "l00243" > < / a > < span class = "lineno" > 243< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00244" > < / a > < span class = "lineno" > 244< / span >   }< / div >
< div class = "line" > < a name = "l00245" > < / a > < span class = "lineno" > 245< / span >   < span class = "preprocessor" > #endif< / span > < / div >
< div class = "line" > < a name = "l00246" > < / a > < span class = "lineno" > 246< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00247" > < / a > < span class = "lineno" > 247< / span >   }< / div >
< div class = "line" > < a name = "l00248" > < / a > < span class = "lineno" > 248< / span >   < / div >
< div class = "line" > < a name = "l00249" > < / a > < span class = "lineno" > 249< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00250" > < / a > < span class = "lineno" > 250< / span >   < span class = "keywordtype" > bool< / span > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::< / div >
< div class = "line" > < a name = "l00251" > < / a > < span class = "lineno" > 251< / span >   CheckRelabelPrecondition(< a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > node)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00252" > < / a > < span class = "lineno" > 252< / span >   < span class = "comment" > // Note that the classical Relabel precondition assumes IsActive(node), i.e.,< / span > < / div >
< div class = "line" > < a name = "l00253" > < / a > < span class = "lineno" > 253< / span >   < span class = "comment" > // the node_excess_[node] > 0. However, to implement the Push Look-Ahead< / span > < / div >
< div class = "line" > < a name = "l00254" > < / a > < span class = "lineno" > 254< / span >   < span class = "comment" > // heuristic, we can relax this condition as explained in the section 4.3 of< / span > < / div >
< div class = "line" > < a name = "l00255" > < / a > < span class = "lineno" > 255< / span >   < span class = "comment" > // the article " An Efficient Implementation of a Scaling Minimum-Cost Flow< / span > < / div >
< div class = "line" > < a name = "l00256" > < / a > < span class = "lineno" > 256< / span >   < span class = "comment" > // Algorithm" , A.V. Goldberg, Journal of Algorithms 22(1), January 1997, pp.< / span > < / div >
< div class = "line" > < a name = "l00257" > < / a > < span class = "lineno" > 257< / span >   < span class = "comment" > // 1-29.< / span > < / div >
< div class = "line" > < a name = "l00258" > < / a > < span class = "lineno" > 258< / span >   < a class = "code" href = "base_2logging_8h.html#aae2dc65d9ea248d54bf39daa986dd295" > DCHECK_GE< / a > (node_excess_[node], 0);< / div >
< div class = "line" > < a name = "l00259" > < / a > < span class = "lineno" > 259< / span >   < span class = "keywordflow" > for< / span > (OutgoingOrOppositeIncomingArcIterator it(*graph_, node); it.Ok();< / div >
< div class = "line" > < a name = "l00260" > < / a > < span class = "lineno" > 260< / span >   it.Next()) {< / div >
< div class = "line" > < a name = "l00261" > < / a > < span class = "lineno" > 261< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc = it.Index();< / div >
< div class = "line" > < a name = "l00262" > < / a > < span class = "lineno" > 262< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (!IsAdmissible(arc)) < < DebugString(< span class = "stringliteral" > " CheckRelabelPrecondition:" < / span > , arc);< / div >
< div class = "line" > < a name = "l00263" > < / a > < span class = "lineno" > 263< / span >   }< / div >
< div class = "line" > < a name = "l00264" > < / a > < span class = "lineno" > 264< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00265" > < / a > < span class = "lineno" > 265< / span >   }< / div >
< div class = "line" > < a name = "l00266" > < / a > < span class = "lineno" > 266< / span >   < / div >
< div class = "line" > < a name = "l00267" > < / a > < span class = "lineno" > 267< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00268" > < / a > < span class = "lineno" > 268< / span >   std::string< / div >
< div class = "line" > < a name = "l00269" > < / a > < span class = "lineno" > 269< / span >   GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::DebugString(< / div >
< div class = "line" > < a name = "l00270" > < / a > < span class = "lineno" > 270< / span >   < span class = "keyword" > const< / span > std::string& < a class = "code" href = "gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6" > context< / a > , < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00271" > < / a > < span class = "lineno" > 271< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > < a class = "code" href = "routing__flow_8cc.html#a64e7efc5529154ba56903e75f5300990" > tail< / a > = Tail(arc);< / div >
< div class = "line" > < a name = "l00272" > < / a > < span class = "lineno" > 272< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > < a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > = Head(arc);< / div >
< div class = "line" > < a name = "l00273" > < / a > < span class = "lineno" > 273< / span >   < span class = "comment" > // Reduced cost is computed directly without calling ReducedCost to avoid< / span > < / div >
< div class = "line" > < a name = "l00274" > < / a > < span class = "lineno" > 274< / span >   < span class = "comment" > // recursive calls between ReducedCost and DebugString in case a DCHECK in< / span > < / div >
< div class = "line" > < a name = "l00275" > < / a > < span class = "lineno" > 275< / span >   < span class = "comment" > // ReducedCost fails.< / span > < / div >
< div class = "line" > < a name = "l00276" > < / a > < span class = "lineno" > 276< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#aee97ac67f280d35acdef2c5d461a85c3" > CostValue< / a > reduced_cost = scaled_arc_unit_cost_[arc] +< / div >
< div class = "line" > < a name = "l00277" > < / a > < span class = "lineno" > 277< / span >   node_potential_[< a class = "code" href = "routing__flow_8cc.html#a64e7efc5529154ba56903e75f5300990" > tail< / a > ] - node_potential_[< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ];< / div >
< div class = "line" > < a name = "l00278" > < / a > < span class = "lineno" > 278< / span >   < span class = "keywordflow" > return< / span > absl::StrFormat(< / div >
< div class = "line" > < a name = "l00279" > < / a > < span class = "lineno" > 279< / span >   < span class = "stringliteral" > " %s Arc %d, from %d to %d, " < / span > < / div >
< div class = "line" > < a name = "l00280" > < / a > < span class = "lineno" > 280< / span >   < span class = "stringliteral" > " Capacity = %d, Residual capacity = %d, " < / span > < / div >
< div class = "line" > < a name = "l00281" > < / a > < span class = "lineno" > 281< / span >   < span class = "stringliteral" > " Flow = residual capacity for reverse arc = %d, " < / span > < / div >
< div class = "line" > < a name = "l00282" > < / a > < span class = "lineno" > 282< / span >   < span class = "stringliteral" > " Height(tail) = %d, Height(head) = %d, " < / span > < / div >
< div class = "line" > < a name = "l00283" > < / a > < span class = "lineno" > 283< / span >   < span class = "stringliteral" > " Excess(tail) = %d, Excess(head) = %d, " < / span > < / div >
< div class = "line" > < a name = "l00284" > < / a > < span class = "lineno" > 284< / span >   < span class = "stringliteral" > " Cost = %d, Reduced cost = %d, " < / span > ,< / div >
< div class = "line" > < a name = "l00285" > < / a > < span class = "lineno" > 285< / span >   < a class = "code" href = "gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6" > context< / a > , arc, < a class = "code" href = "routing__flow_8cc.html#a64e7efc5529154ba56903e75f5300990" > tail< / a > , < a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > , Capacity(arc),< / div >
< div class = "line" > < a name = "l00286" > < / a > < span class = "lineno" > 286< / span >   < span class = "keyword" > static_cast< < / span > < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > < span class = "keyword" > > < / span > (residual_arc_capacity_[arc]), Flow(arc),< / div >
< div class = "line" > < a name = "l00287" > < / a > < span class = "lineno" > 287< / span >   node_potential_[< a class = "code" href = "routing__flow_8cc.html#a64e7efc5529154ba56903e75f5300990" > tail< / a > ], node_potential_[< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ], node_excess_[< a class = "code" href = "routing__flow_8cc.html#a64e7efc5529154ba56903e75f5300990" > tail< / a > ],< / div >
< div class = "line" > < a name = "l00288" > < / a > < span class = "lineno" > 288< / span >   node_excess_[< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ], < span class = "keyword" > static_cast< < / span > < a class = "code" href = "namespaceoperations__research.html#aee97ac67f280d35acdef2c5d461a85c3" > CostValue< / a > < span class = "keyword" > > < / span > (scaled_arc_unit_cost_[arc]),< / div >
< div class = "line" > < a name = "l00289" > < / a > < span class = "lineno" > 289< / span >   reduced_cost);< / div >
< div class = "line" > < a name = "l00290" > < / a > < span class = "lineno" > 290< / span >   }< / div >
< div class = "line" > < a name = "l00291" > < / a > < span class = "lineno" > 291< / span >   < / div >
< div class = "line" > < a name = "l00292" > < / a > < span class = "lineno" > 292< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00293" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_min_cost_flow.html#a92607deae80e69a2a63cc2d8f5205bd5" > 293< / a > < / span >   < span class = "keywordtype" > bool< / span > < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a92607deae80e69a2a63cc2d8f5205bd5" > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::< / a > < / div >
< div class = "line" > < a name = "l00294" > < / a > < span class = "lineno" > 294< / span >   < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a92607deae80e69a2a63cc2d8f5205bd5" > CheckFeasibility< / a > (std::vector< NodeIndex> * < span class = "keyword" > const< / span > infeasible_supply_node,< / div >
< div class = "line" > < a name = "l00295" > < / a > < span class = "lineno" > 295< / span >   std::vector< NodeIndex> * < span class = "keyword" > const< / span > infeasible_demand_node) {< / div >
< div class = "line" > < a name = "l00296" > < / a > < span class = "lineno" > 296< / span >   < a class = "code" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a name = "l00297" > < / a > < span class = "lineno" > 297< / span >   < span class = "comment" > // Create a new graph, which is a copy of graph_, with the following< / span > < / div >
< div class = "line" > < a name = "l00298" > < / a > < span class = "lineno" > 298< / span >   < span class = "comment" > // modifications:< / span > < / div >
< div class = "line" > < a name = "l00299" > < / a > < span class = "lineno" > 299< / span >   < span class = "comment" > // Two nodes are added: a source and a sink.< / span > < / div >
< div class = "line" > < a name = "l00300" > < / a > < span class = "lineno" > 300< / span >   < span class = "comment" > // The source is linked to each supply node (whose supply > 0) by an arc whose< / span > < / div >
< div class = "line" > < a name = "l00301" > < / a > < span class = "lineno" > 301< / span >   < span class = "comment" > // capacity is equal to the supply at the supply node.< / span > < / div >
< div class = "line" > < a name = "l00302" > < / a > < span class = "lineno" > 302< / span >   < span class = "comment" > // The sink is linked to each demand node (whose supply < 0) by an arc whose< / span > < / div >
< div class = "line" > < a name = "l00303" > < / a > < span class = "lineno" > 303< / span >   < span class = "comment" > // capacity is the demand (-supply) at the demand node.< / span > < / div >
< div class = "line" > < a name = "l00304" > < / a > < span class = "lineno" > 304< / span >   < span class = "comment" > // There are no supplies or demands or costs in the graph, as we will run< / span > < / div >
< div class = "line" > < a name = "l00305" > < / a > < span class = "lineno" > 305< / span >   < span class = "comment" > // max-flow.< / span > < / div >
< div class = "line" > < a name = "l00306" > < / a > < span class = "lineno" > 306< / span >   < span class = "comment" > // TODO(user): make it possible to share a graph by MaxFlow and MinCostFlow.< / span > < / div >
< div class = "line" > < a name = "l00307" > < / a > < span class = "lineno" > 307< / span >   < span class = "comment" > // For this it is necessary to make StarGraph resizable.< / span > < / div >
< div class = "line" > < a name = "l00308" > < / a > < span class = "lineno" > 308< / span >   feasibility_checked_ = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00309" > < / a > < span class = "lineno" > 309< / span >   < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > num_extra_arcs = 0;< / div >
< div class = "line" > < a name = "l00310" > < / a > < span class = "lineno" > 310< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > node = 0; node < graph_-> num_nodes(); ++node) {< / div >
< div class = "line" > < a name = "l00311" > < / a > < span class = "lineno" > 311< / span >   < span class = "keywordflow" > if< / span > (initial_node_excess_[node] != 0) {< / div >
< div class = "line" > < a name = "l00312" > < / a > < span class = "lineno" > 312< / span >   ++num_extra_arcs;< / div >
< div class = "line" > < a name = "l00313" > < / a > < span class = "lineno" > 313< / span >   }< / div >
< div class = "line" > < a name = "l00314" > < / a > < span class = "lineno" > 314< / span >   }< / div >
< div class = "line" > < a name = "l00315" > < / a > < span class = "lineno" > 315< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > num_nodes_in_max_flow = graph_-> num_nodes() + 2;< / div >
< div class = "line" > < a name = "l00316" > < / a > < span class = "lineno" > 316< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > num_arcs_in_max_flow = graph_-> num_arcs() + num_extra_arcs;< / div >
< div class = "line" > < a name = "l00317" > < / a > < span class = "lineno" > 317< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > source = num_nodes_in_max_flow - 2;< / div >
< div class = "line" > < a name = "l00318" > < / a > < span class = "lineno" > 318< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > sink = num_nodes_in_max_flow - 1;< / div >
< div class = "line" > < a name = "l00319" > < / a > < span class = "lineno" > 319< / span >   < a class = "code" href = "classoperations__research_1_1_ebert_graph.html" > StarGraph< / a > checker_graph(num_nodes_in_max_flow, num_arcs_in_max_flow);< / div >
< div class = "line" > < a name = "l00320" > < / a > < span class = "lineno" > 320< / span >   < a class = "code" href = "classoperations__research_1_1_max_flow.html" > MaxFlow< / a > checker(& checker_graph, source, sink);< / div >
< div class = "line" > < a name = "l00321" > < / a > < span class = "lineno" > 321< / span >   checker.< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#aa76638d2f8eddf2c3d9778b3c1285010" > SetCheckInput< / a > (< span class = "keyword" > false< / span > );< / div >
< div class = "line" > < a name = "l00322" > < / a > < span class = "lineno" > 322< / span >   checker.< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#aa4e5f2ba9abcf71460c68a4903abc7bc" > SetCheckResult< / a > (< span class = "keyword" > false< / span > );< / div >
< div class = "line" > < a name = "l00323" > < / a > < span class = "lineno" > 323< / span >   < span class = "comment" > // Copy graph_ to checker_graph.< / span > < / div >
< div class = "line" > < a name = "l00324" > < / a > < span class = "lineno" > 324< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > arc = 0; arc < graph_-> num_arcs(); ++arc) {< / div >
< div class = "line" > < a name = "l00325" > < / a > < span class = "lineno" > 325< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > new_arc =< / div >
< div class = "line" > < a name = "l00326" > < / a > < span class = "lineno" > 326< / span >   checker_graph.< a class = "code" href = "classoperations__research_1_1_ebert_graph_base.html#a7b505ba4a01bce342d049f5a8674da72" > AddArc< / a > (graph_-> Tail(arc), graph_-> Head(arc));< / div >
< div class = "line" > < a name = "l00327" > < / a > < span class = "lineno" > 327< / span >   < a class = "code" href = "base_2logging_8h.html#ae89df3243bbb8341130c7b3f44145ea0" > DCHECK_EQ< / a > (arc, new_arc);< / div >
< div class = "line" > < a name = "l00328" > < / a > < span class = "lineno" > 328< / span >   checker.< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a21776d0248204801a49c42b46902c1a1" > SetArcCapacity< / a > (new_arc, Capacity(arc));< / div >
< div class = "line" > < a name = "l00329" > < / a > < span class = "lineno" > 329< / span >   }< / div >
< div class = "line" > < a name = "l00330" > < / a > < span class = "lineno" > 330< / span >   < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > total_demand = 0;< / div >
< div class = "line" > < a name = "l00331" > < / a > < span class = "lineno" > 331< / span >   < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > total_supply = 0;< / div >
< div class = "line" > < a name = "l00332" > < / a > < span class = "lineno" > 332< / span >   < span class = "comment" > // Create the source-to-supply node arcs and the demand-node-to-sink arcs.< / span > < / div >
< div class = "line" > < a name = "l00333" > < / a > < span class = "lineno" > 333< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > node = 0; node < graph_-> num_nodes(); ++node) {< / div >
< div class = "line" > < a name = "l00334" > < / a > < span class = "lineno" > 334< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > supply = initial_node_excess_[node];< / div >
< div class = "line" > < a name = "l00335" > < / a > < span class = "lineno" > 335< / span >   < span class = "keywordflow" > if< / span > (supply > 0) {< / div >
< div class = "line" > < a name = "l00336" > < / a > < span class = "lineno" > 336< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > new_arc = checker_graph.< a class = "code" href = "classoperations__research_1_1_ebert_graph_base.html#a7b505ba4a01bce342d049f5a8674da72" > AddArc< / a > (source, node);< / div >
< div class = "line" > < a name = "l00337" > < / a > < span class = "lineno" > 337< / span >   checker.< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a21776d0248204801a49c42b46902c1a1" > SetArcCapacity< / a > (new_arc, supply);< / div >
< div class = "line" > < a name = "l00338" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_min_cost_flow.html#a34e6d785d3dc22ee8d54bad8f1cf6cc2" > 338< / a > < / span >   total_supply += supply;< / div >
< div class = "line" > < a name = "l00339" > < / a > < span class = "lineno" > 339< / span >   } < span class = "keywordflow" > else< / span > < span class = "keywordflow" > if< / span > (supply < 0) {< / div >
< div class = "line" > < a name = "l00340" > < / a > < span class = "lineno" > 340< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > new_arc = checker_graph.< a class = "code" href = "classoperations__research_1_1_ebert_graph_base.html#a7b505ba4a01bce342d049f5a8674da72" > AddArc< / a > (node, sink);< / div >
< div class = "line" > < a name = "l00341" > < / a > < span class = "lineno" > 341< / span >   checker.< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a21776d0248204801a49c42b46902c1a1" > SetArcCapacity< / a > (new_arc, -supply);< / div >
< div class = "line" > < a name = "l00342" > < / a > < span class = "lineno" > 342< / span >   total_demand -= supply;< / div >
< div class = "line" > < a name = "l00343" > < / a > < span class = "lineno" > 343< / span >   }< / div >
< div class = "line" > < a name = "l00344" > < / a > < span class = "lineno" > 344< / span >   }< / div >
< div class = "line" > < a name = "l00345" > < / a > < span class = "lineno" > 345< / span >   < span class = "keywordflow" > if< / span > (total_supply != total_demand) {< / div >
< div class = "line" > < a name = "l00346" > < / a > < span class = "lineno" > 346< / span >   < a class = "code" href = "base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae" > LOG< / a > (DFATAL) < < < span class = "stringliteral" > " total_supply(" < / span > < < total_supply < < < span class = "stringliteral" > " ) != total_demand(" < / span > < / div >
< div class = "line" > < a name = "l00347" > < / a > < span class = "lineno" > 347< / span >   < < total_demand < < < span class = "stringliteral" > " )." < / span > ;< / div >
< div class = "line" > < a name = "l00348" > < / a > < span class = "lineno" > 348< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00349" > < / a > < span class = "lineno" > 349< / span >   }< / div >
< div class = "line" > < a name = "l00350" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_min_cost_flow.html#a7cd2dc0776a9f339b56ffac996a7df8c" > 350< / a > < / span >   < span class = "keywordflow" > if< / span > (!checker.< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a942f29030f08426e7e318204e987e2f7" > Solve< / a > ()) {< / div >
< div class = "line" > < a name = "l00351" > < / a > < span class = "lineno" > 351< / span >   < a class = "code" href = "base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae" > LOG< / a > (DFATAL) < < < span class = "stringliteral" > " Max flow could not be computed." < / span > ;< / div >
< div class = "line" > < a name = "l00352" > < / a > < span class = "lineno" > 352< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00353" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_min_cost_flow.html#ab7f4041c8667d63761aecb9657823945" > 353< / a > < / span >   }< / div >
< div class = "line" > < a name = "l00354" > < / a > < span class = "lineno" > 354< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > optimal_max_flow = checker.< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a142146c1af2855fc821d7bd4c0af6130" > GetOptimalFlow< / a > ();< / div >
< div class = "line" > < a name = "l00355" > < / a > < span class = "lineno" > 355< / span >   feasible_node_excess_.SetAll(0);< / div >
< div class = "line" > < a name = "l00356" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_min_cost_flow.html#aeb6622ffa760bc9403144736f8ac4ad4" > 356< / a > < / span >   < span class = "keywordflow" > for< / span > (StarGraph::OutgoingArcIterator it(checker_graph, source); it.Ok();< / div >
< div class = "line" > < a name = "l00357" > < / a > < span class = "lineno" > 357< / span >   it.Next()) {< / div >
< div class = "line" > < a name = "l00358" > < / a > < span class = "lineno" > 358< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > arc = it.Index();< / div >
< div class = "line" > < a name = "l00359" > < / a > < span class = "lineno" > 359< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > node = checker_graph.< a class = "code" href = "classoperations__research_1_1_star_graph_base.html#a5237cfbb86ec8f305e498e873e5c4e95" > Head< / a > (arc);< / div >
< div class = "line" > < a name = "l00360" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_min_cost_flow.html#a89b020eea8abc71434d63071a1e38527" > 360< / a > < / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > flow = checker.< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a2a420ad8221c326064736ccf148d2f93" > Flow< / a > (arc);< / div >
< div class = "line" > < a name = "l00361" > < / a > < span class = "lineno" > 361< / span >   feasible_node_excess_.Set(node, flow);< / div >
< div class = "line" > < a name = "l00362" > < / a > < span class = "lineno" > 362< / span >   < span class = "keywordflow" > if< / span > (infeasible_supply_node != < span class = "keyword" > nullptr< / span > ) {< / div >
< div class = "line" > < a name = "l00363" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_min_cost_flow.html#a942f29030f08426e7e318204e987e2f7" > 363< / a > < / span >   infeasible_supply_node-> push_back(node);< / div >
< div class = "line" > < a name = "l00364" > < / a > < span class = "lineno" > 364< / span >   }< / div >
< div class = "line" > < a name = "l00365" > < / a > < span class = "lineno" > 365< / span >   }< / div >
< div class = "line" > < a name = "l00366" > < / a > < span class = "lineno" > 366< / span >   < span class = "keywordflow" > for< / span > (StarGraph::IncomingArcIterator it(checker_graph, sink); it.Ok();< / div >
< div class = "line" > < a name = "l00367" > < / a > < span class = "lineno" > 367< / span >   it.Next()) {< / div >
< div class = "line" > < a name = "l00368" > < / a > < span class = "lineno" > 368< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc = it.Index();< / div >
< div class = "line" > < a name = "l00369" > < / a > < span class = "lineno" > 369< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > node = checker_graph.< a class = "code" href = "classoperations__research_1_1_ebert_graph.html#aae684b1eb132c8c201f437d88e367b55" > Tail< / a > (arc);< / div >
< div class = "line" > < a name = "l00370" > < / a > < span class = "lineno" > 370< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > flow = checker.< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a2a420ad8221c326064736ccf148d2f93" > Flow< / a > (arc);< / div >
< div class = "line" > < a name = "l00371" > < / a > < span class = "lineno" > 371< / span >   feasible_node_excess_.Set(node, -flow);< / div >
< div class = "line" > < a name = "l00372" > < / a > < span class = "lineno" > 372< / span >   < span class = "keywordflow" > if< / span > (infeasible_demand_node != < span class = "keyword" > nullptr< / span > ) {< / div >
< div class = "line" > < a name = "l00373" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_min_cost_flow.html#a92607deae80e69a2a63cc2d8f5205bd5" > 373< / a > < / span >   infeasible_demand_node-> push_back(node);< / div >
< div class = "line" > < a name = "l00374" > < / a > < span class = "lineno" > 374< / span >   }< / div >
< div class = "line" > < a name = "l00375" > < / a > < span class = "lineno" > 375< / span >   }< / div >
< div class = "line" > < a name = "l00376" > < / a > < span class = "lineno" > 376< / span >   feasibility_checked_ = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00377" > < / a > < span class = "lineno" > 377< / span >   < span class = "keywordflow" > return< / span > optimal_max_flow == total_supply;< / div >
< div class = "line" > < a name = "l00378" > < / a > < span class = "lineno" > 378< / span >   }< / div >
< div class = "line" > < a name = "l00379" > < / a > < span class = "lineno" > 379< / span >   < / div >
< div class = "line" > < a name = "l00380" > < / a > < span class = "lineno" > 380< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00381" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_min_cost_flow.html#a3051a4b6d1a5a9fb5444f6d5a295a95c" > 381< / a > < / span >   < span class = "keywordtype" > bool< / span > < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a3051a4b6d1a5a9fb5444f6d5a295a95c" > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::MakeFeasible< / a > () {< / div >
< div class = "line" > < a name = "l00382" > < / a > < span class = "lineno" > 382< / span >   < span class = "keywordflow" > if< / span > (!feasibility_checked_) {< / div >
< div class = "line" > < a name = "l00383" > < / a > < span class = "lineno" > 383< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00384" > < / a > < span class = "lineno" > 384< / span >   }< / div >
< div class = "line" > < a name = "l00385" > < / a > < span class = "lineno" > 385< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > node = 0; node < graph_-> num_nodes(); ++node) {< / div >
< div class = "line" > < a name = "l00386" > < / a > < span class = "lineno" > 386< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > excess = feasible_node_excess_[node];< / div >
< div class = "line" > < a name = "l00387" > < / a > < span class = "lineno" > 387< / span >   node_excess_.Set(node, excess);< / div >
< div class = "line" > < a name = "l00388" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_min_cost_flow.html#a2a420ad8221c326064736ccf148d2f93" > 388< / a > < / span >   initial_node_excess_.Set(node, excess);< / div >
< div class = "line" > < a name = "l00389" > < / a > < span class = "lineno" > 389< / span >   }< / div >
< div class = "line" > < a name = "l00390" > < / a > < span class = "lineno" > 390< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00391" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_min_cost_flow.html#a9dcd8610149406a1593d2a0725290482" > 391< / a > < / span >   }< / div >
< div class = "line" > < a name = "l00392" > < / a > < span class = "lineno" > 392< / span >   < / div >
< div class = "line" > < a name = "l00393" > < / a > < span class = "lineno" > 393< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00394" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_min_cost_flow.html#a2a420ad8221c326064736ccf148d2f93" > 394< / a > < / span >   < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a2a420ad8221c326064736ccf148d2f93" > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::Flow< / a > (< / div >
< div class = "line" > < a name = "l00395" > < / a > < span class = "lineno" > 395< / span >   < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > arc)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00396" > < / a > < span class = "lineno" > 396< / span >   < span class = "keywordflow" > if< / span > (IsArcDirect(arc)) {< / div >
< div class = "line" > < a name = "l00397" > < / a > < span class = "lineno" > 397< / span >   < span class = "keywordflow" > return< / span > residual_arc_capacity_[Opposite(arc)];< / div >
< div class = "line" > < a name = "l00398" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_min_cost_flow.html#aafd4139404e4f42af650481c3ff10cc7" > 398< / a > < / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00399" > < / a > < span class = "lineno" > 399< / span >   < span class = "keywordflow" > return< / span > -residual_arc_capacity_[arc];< / div >
< div class = "line" > < a name = "l00400" > < / a > < span class = "lineno" > 400< / span >   }< / div >
< div class = "line" > < a name = "l00401" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_min_cost_flow.html#a84859dfe0d913de5132fd421bf5d002d" > 401< / a > < / span >   }< / div >
< div class = "line" > < a name = "l00402" > < / a > < span class = "lineno" > 402< / span >   < / div >
< div class = "line" > < a name = "l00403" > < / a > < span class = "lineno" > 403< / span >   < span class = "comment" > // We use the equations given in the comment of residual_arc_capacity_.< / span > < / div >
< div class = "line" > < a name = "l00404" > < / a > < span class = "lineno" > 404< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00405" > < / a > < span class = "lineno" > 405< / span >   < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > < / div >
< div class = "line" > < a name = "l00406" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_min_cost_flow.html#a9dcd8610149406a1593d2a0725290482" > 406< / a > < / span >   < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a9dcd8610149406a1593d2a0725290482" > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::Capacity< / a > (< / div >
< div class = "line" > < a name = "l00407" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_min_cost_flow.html#a27a137ef3b0fb7f787eb460dcfd52591" > 407< / a > < / span >   < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > arc)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00408" > < / a > < span class = "lineno" > 408< / span >   < span class = "keywordflow" > if< / span > (IsArcDirect(arc)) {< / div >
< div class = "line" > < a name = "l00409" > < / a > < span class = "lineno" > 409< / span >   < span class = "keywordflow" > return< / span > residual_arc_capacity_[arc] + residual_arc_capacity_[Opposite(arc)];< / div >
< div class = "line" > < a name = "l00410" > < / a > < span class = "lineno" > 410< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00411" > < / a > < span class = "lineno" > 411< / span >   < span class = "keywordflow" > return< / span > 0;< / div >
< div class = "line" > < a name = "l00412" > < / a > < span class = "lineno" > 412< / span >   }< / div >
< div class = "line" > < a name = "l00413" > < / a > < span class = "lineno" > 413< / span >   }< / div >
< div class = "line" > < a name = "l00414" > < / a > < span class = "lineno" > 414< / span >   < / div >
< div class = "line" > < a name = "l00415" > < / a > < span class = "lineno" > 415< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00416" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_min_cost_flow.html#a1057f1a98821c9237d75967b575f3829" > 416< / a > < / span >   < a class = "code" href = "namespaceoperations__research.html#aee97ac67f280d35acdef2c5d461a85c3" > CostValue< / a > < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a1057f1a98821c9237d75967b575f3829" > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::UnitCost< / a > (< / div >
< div class = "line" > < a name = "l00417" > < / a > < span class = "lineno" > 417< / span >   < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > arc)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00418" > < / a > < span class = "lineno" > 418< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (IsArcValid(arc));< / div >
< div class = "line" > < a name = "l00419" > < / a > < span class = "lineno" > 419< / span >   < a class = "code" href = "base_2logging_8h.html#ae89df3243bbb8341130c7b3f44145ea0" > DCHECK_EQ< / a > (uint64_t{1}, cost_scaling_factor_);< / div >
< div class = "line" > < a name = "l00420" > < / a > < span class = "lineno" > 420< / span >   < span class = "keywordflow" > return< / span > scaled_arc_unit_cost_[arc];< / div >
< div class = "line" > < a name = "l00421" > < / a > < span class = "lineno" > 421< / span >   }< / div >
< div class = "line" > < a name = "l00422" > < / a > < span class = "lineno" > 422< / span >   < / div >
< div class = "line" > < a name = "l00423" > < / a > < span class = "lineno" > 423< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00424" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_min_cost_flow.html#aafd4139404e4f42af650481c3ff10cc7" > 424< / a > < / span >   < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#aafd4139404e4f42af650481c3ff10cc7" > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::Supply< / a > (< / div >
< div class = "line" > < a name = "l00425" > < / a > < span class = "lineno" > 425< / span >   < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > node)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00426" > < / a > < span class = "lineno" > 426< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (graph_-> IsNodeValid(node));< / div >
< div class = "line" > < a name = "l00427" > < / a > < span class = "lineno" > 427< / span >   < span class = "keywordflow" > return< / span > node_excess_[node];< / div >
< div class = "line" > < a name = "l00428" > < / a > < span class = "lineno" > 428< / span >   }< / div >
< div class = "line" > < a name = "l00429" > < / a > < span class = "lineno" > 429< / span >   < / div >
< div class = "line" > < a name = "l00430" > < / a > < span class = "lineno" > 430< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00431" > < / a > < span class = "lineno" > 431< / span >   < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > < / div >
< div class = "line" > < a name = "l00432" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_min_cost_flow.html#a84859dfe0d913de5132fd421bf5d002d" > 432< / a > < / span >   < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a84859dfe0d913de5132fd421bf5d002d" > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::InitialSupply< / a > (< / div >
< div class = "line" > < a name = "l00433" > < / a > < span class = "lineno" > 433< / span >   < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > node)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00434" > < / a > < span class = "lineno" > 434< / span >   < span class = "keywordflow" > return< / span > initial_node_excess_[node];< / div >
< div class = "line" > < a name = "l00435" > < / a > < span class = "lineno" > 435< / span >   }< / div >
< div class = "line" > < a name = "l00436" > < / a > < span class = "lineno" > 436< / span >   < / div >
< div class = "line" > < a name = "l00437" > < / a > < span class = "lineno" > 437< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00438" > < / a > < span class = "lineno" > 438< / span >   < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > < / div >
< div class = "line" > < a name = "l00439" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_min_cost_flow.html#a27a137ef3b0fb7f787eb460dcfd52591" > 439< / a > < / span >   < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a27a137ef3b0fb7f787eb460dcfd52591" > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::FeasibleSupply< / a > (< / div >
< div class = "line" > < a name = "l00440" > < / a > < span class = "lineno" > 440< / span >   < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > node)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00441" > < / a > < span class = "lineno" > 441< / span >   < span class = "keywordflow" > return< / span > feasible_node_excess_[node];< / div >
< div class = "line" > < a name = "l00442" > < / a > < span class = "lineno" > 442< / span >   }< / div >
< div class = "line" > < a name = "l00443" > < / a > < span class = "lineno" > 443< / span >   < / div >
< div class = "line" > < a name = "l00444" > < / a > < span class = "lineno" > 444< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00445" > < / a > < span class = "lineno" > 445< / span >   < span class = "keywordtype" > bool< / span > < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html" > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::IsAdmissible< / a > (< / div >
< div class = "line" > < a name = "l00446" > < / a > < span class = "lineno" > 446< / span >   < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00447" > < / a > < span class = "lineno" > 447< / span >   < span class = "keywordflow" > return< / span > FastIsAdmissible(arc, node_potential_[Tail(arc)]);< / div >
< div class = "line" > < a name = "l00448" > < / a > < span class = "lineno" > 448< / span >   }< / div >
< div class = "line" > < a name = "l00449" > < / a > < span class = "lineno" > 449< / span >   < / div >
< div class = "line" > < a name = "l00450" > < / a > < span class = "lineno" > 450< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00451" > < / a > < span class = "lineno" > 451< / span >   < span class = "keywordtype" > bool< / span > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::< / div >
< div class = "line" > < a name = "l00452" > < / a > < span class = "lineno" > 452< / span >   FastIsAdmissible(< a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc, < a class = "code" href = "namespaceoperations__research.html#aee97ac67f280d35acdef2c5d461a85c3" > CostValue< / a > tail_potential)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00453" > < / a > < span class = "lineno" > 453< / span >   < a class = "code" href = "base_2logging_8h.html#ae89df3243bbb8341130c7b3f44145ea0" > DCHECK_EQ< / a > (node_potential_[Tail(arc)], tail_potential);< / div >
< div class = "line" > < a name = "l00454" > < / a > < span class = "lineno" > 454< / span >   < span class = "keywordflow" > return< / span > residual_arc_capacity_[arc] > 0 & & < / div >
< div class = "line" > < a name = "l00455" > < / a > < span class = "lineno" > 455< / span >   FastReducedCost(arc, tail_potential) < 0;< / div >
< div class = "line" > < a name = "l00456" > < / a > < span class = "lineno" > 456< / span >   }< / div >
< div class = "line" > < a name = "l00457" > < / a > < span class = "lineno" > 457< / span >   < / div >
< div class = "line" > < a name = "l00458" > < / a > < span class = "lineno" > 458< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00459" > < / a > < span class = "lineno" > 459< / span >   < span class = "keywordtype" > bool< / span > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::IsActive(< / div >
< div class = "line" > < a name = "l00460" > < / a > < span class = "lineno" > 460< / span >   < a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > node)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00461" > < / a > < span class = "lineno" > 461< / span >   < span class = "keywordflow" > return< / span > node_excess_[node] > 0;< / div >
< div class = "line" > < a name = "l00462" > < / a > < span class = "lineno" > 462< / span >   }< / div >
< div class = "line" > < a name = "l00463" > < / a > < span class = "lineno" > 463< / span >   < / div >
< div class = "line" > < a name = "l00464" > < / a > < span class = "lineno" > 464< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00465" > < / a > < span class = "lineno" > 465< / span >   < a class = "code" href = "namespaceoperations__research.html#aee97ac67f280d35acdef2c5d461a85c3" > CostValue< / a > < / div >
< div class = "line" > < a name = "l00466" > < / a > < span class = "lineno" > 466< / span >   GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::ReducedCost(< / div >
< div class = "line" > < a name = "l00467" > < / a > < span class = "lineno" > 467< / span >   < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00468" > < / a > < span class = "lineno" > 468< / span >   < span class = "keywordflow" > return< / span > FastReducedCost(arc, node_potential_[Tail(arc)]);< / div >
< div class = "line" > < a name = "l00469" > < / a > < span class = "lineno" > 469< / span >   }< / div >
< div class = "line" > < a name = "l00470" > < / a > < span class = "lineno" > 470< / span >   < / div >
< div class = "line" > < a name = "l00471" > < / a > < span class = "lineno" > 471< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00472" > < / a > < span class = "lineno" > 472< / span >   < a class = "code" href = "namespaceoperations__research.html#aee97ac67f280d35acdef2c5d461a85c3" > CostValue< / a > < / div >
< div class = "line" > < a name = "l00473" > < / a > < span class = "lineno" > 473< / span >   GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::FastReducedCost(< / div >
< div class = "line" > < a name = "l00474" > < / a > < span class = "lineno" > 474< / span >   < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc, < a class = "code" href = "namespaceoperations__research.html#aee97ac67f280d35acdef2c5d461a85c3" > CostValue< / a > tail_potential)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00475" > < / a > < span class = "lineno" > 475< / span >   < a class = "code" href = "base_2logging_8h.html#ae89df3243bbb8341130c7b3f44145ea0" > DCHECK_EQ< / a > (node_potential_[Tail(arc)], tail_potential);< / div >
< div class = "line" > < a name = "l00476" > < / a > < span class = "lineno" > 476< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (graph_-> IsNodeValid(Tail(arc)));< / div >
< div class = "line" > < a name = "l00477" > < / a > < span class = "lineno" > 477< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (graph_-> IsNodeValid(Head(arc)));< / div >
< div class = "line" > < a name = "l00478" > < / a > < span class = "lineno" > 478< / span >   < a class = "code" href = "base_2logging_8h.html#a4395e95bab44e222cb2e77251017a0e2" > DCHECK_LE< / a > (node_potential_[Tail(arc)], 0) < < DebugString(< span class = "stringliteral" > " ReducedCost:" < / span > , arc);< / div >
< div class = "line" > < a name = "l00479" > < / a > < span class = "lineno" > 479< / span >   < a class = "code" href = "base_2logging_8h.html#a4395e95bab44e222cb2e77251017a0e2" > DCHECK_LE< / a > (node_potential_[Head(arc)], 0) < < DebugString(< span class = "stringliteral" > " ReducedCost:" < / span > , arc);< / div >
< div class = "line" > < a name = "l00480" > < / a > < span class = "lineno" > 480< / span >   < span class = "keywordflow" > return< / span > scaled_arc_unit_cost_[arc] + tail_potential -< / div >
< div class = "line" > < a name = "l00481" > < / a > < span class = "lineno" > 481< / span >   node_potential_[Head(arc)];< / div >
< div class = "line" > < a name = "l00482" > < / a > < span class = "lineno" > 482< / span >   }< / div >
< div class = "line" > < a name = "l00483" > < / a > < span class = "lineno" > 483< / span >   < / div >
< div class = "line" > < a name = "l00484" > < / a > < span class = "lineno" > 484< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00485" > < / a > < span class = "lineno" > 485< / span >   < span class = "keyword" > typename< / span > < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::ArcIndex< / a > < / div >
< div class = "line" > < a name = "l00486" > < / a > < span class = "lineno" > 486< / span >   GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::< / div >
< div class = "line" > < a name = "l00487" > < / a > < span class = "lineno" > 487< / span >   GetFirstOutgoingOrOppositeIncomingArc(< a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > node)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00488" > < / a > < span class = "lineno" > 488< / span >   OutgoingOrOppositeIncomingArcIterator arc_it(*graph_, node);< / div >
< div class = "line" > < a name = "l00489" > < / a > < span class = "lineno" > 489< / span >   < span class = "keywordflow" > return< / span > arc_it.Index();< / div >
< div class = "line" > < a name = "l00490" > < / a > < span class = "lineno" > 490< / span >   }< / div >
< div class = "line" > < a name = "l00491" > < / a > < span class = "lineno" > 491< / span >   < / div >
< div class = "line" > < a name = "l00492" > < / a > < span class = "lineno" > 492< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00493" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_min_cost_flow.html#a942f29030f08426e7e318204e987e2f7" > 493< / a > < / span >   < span class = "keywordtype" > bool< / span > < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a942f29030f08426e7e318204e987e2f7" > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::Solve< / a > () {< / div >
< div class = "line" > < a name = "l00494" > < / a > < span class = "lineno" > 494< / span >   status_ = NOT_SOLVED;< / div >
< div class = "line" > < a name = "l00495" > < / a > < span class = "lineno" > 495< / span >   < span class = "keywordflow" > if< / span > (absl::GetFlag(FLAGS_min_cost_flow_check_balance) & & < / div >
< div class = "line" > < a name = "l00496" > < / a > < span class = "lineno" > 496< / span >   !CheckInputConsistency()) {< / div >
< div class = "line" > < a name = "l00497" > < / a > < span class = "lineno" > 497< / span >   status_ = UNBALANCED;< / div >
< div class = "line" > < a name = "l00498" > < / a > < span class = "lineno" > 498< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00499" > < / a > < span class = "lineno" > 499< / span >   }< / div >
< div class = "line" > < a name = "l00500" > < / a > < span class = "lineno" > 500< / span >   < span class = "keywordflow" > if< / span > (absl::GetFlag(FLAGS_min_cost_flow_check_costs) & & !CheckCostRange()) {< / div >
< div class = "line" > < a name = "l00501" > < / a > < span class = "lineno" > 501< / span >   status_ = BAD_COST_RANGE;< / div >
< div class = "line" > < a name = "l00502" > < / a > < span class = "lineno" > 502< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00503" > < / a > < span class = "lineno" > 503< / span >   }< / div >
< div class = "line" > < a name = "l00504" > < / a > < span class = "lineno" > 504< / span >   < span class = "keywordflow" > if< / span > (check_feasibility_ & & !CheckFeasibility(< span class = "keyword" > nullptr< / span > , < span class = "keyword" > nullptr< / span > )) {< / div >
< div class = "line" > < a name = "l00505" > < / a > < span class = "lineno" > 505< / span >   status_ = INFEASIBLE;< / div >
< div class = "line" > < a name = "l00506" > < / a > < span class = "lineno" > 506< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00507" > < / a > < span class = "lineno" > 507< / span >   }< / div >
< div class = "line" > < a name = "l00508" > < / a > < span class = "lineno" > 508< / span >   node_potential_.SetAll(0);< / div >
< div class = "line" > < a name = "l00509" > < / a > < span class = "lineno" > 509< / span >   ResetFirstAdmissibleArcs();< / div >
< div class = "line" > < a name = "l00510" > < / a > < span class = "lineno" > 510< / span >   ScaleCosts();< / div >
< div class = "line" > < a name = "l00511" > < / a > < span class = "lineno" > 511< / span >   Optimize();< / div >
< div class = "line" > < a name = "l00512" > < / a > < span class = "lineno" > 512< / span >   < span class = "keywordflow" > if< / span > (absl::GetFlag(FLAGS_min_cost_flow_check_result) & & !CheckResult()) {< / div >
< div class = "line" > < a name = "l00513" > < / a > < span class = "lineno" > 513< / span >   status_ = BAD_RESULT;< / div >
< div class = "line" > < a name = "l00514" > < / a > < span class = "lineno" > 514< / span >   UnscaleCosts();< / div >
< div class = "line" > < a name = "l00515" > < / a > < span class = "lineno" > 515< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00516" > < / a > < span class = "lineno" > 516< / span >   }< / div >
< div class = "line" > < a name = "l00517" > < / a > < span class = "lineno" > 517< / span >   UnscaleCosts();< / div >
< div class = "line" > < a name = "l00518" > < / a > < span class = "lineno" > 518< / span >   < span class = "keywordflow" > if< / span > (status_ != OPTIMAL) {< / div >
< div class = "line" > < a name = "l00519" > < / a > < span class = "lineno" > 519< / span >   < a class = "code" href = "base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae" > LOG< / a > (DFATAL) < < < span class = "stringliteral" > " Status != OPTIMAL" < / span > ;< / div >
< div class = "line" > < a name = "l00520" > < / a > < span class = "lineno" > 520< / span >   total_flow_cost_ = 0;< / div >
< div class = "line" > < a name = "l00521" > < / a > < span class = "lineno" > 521< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00522" > < / a > < span class = "lineno" > 522< / span >   }< / div >
< div class = "line" > < a name = "l00523" > < / a > < span class = "lineno" > 523< / span >   total_flow_cost_ = 0;< / div >
< div class = "line" > < a name = "l00524" > < / a > < span class = "lineno" > 524< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > arc = 0; arc < graph_-> num_arcs(); ++arc) {< / div >
< div class = "line" > < a name = "l00525" > < / a > < span class = "lineno" > 525< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > flow_on_arc = residual_arc_capacity_[Opposite(arc)];< / div >
< div class = "line" > < a name = "l00526" > < / a > < span class = "lineno" > 526< / span >   total_flow_cost_ += scaled_arc_unit_cost_[arc] * flow_on_arc;< / div >
< div class = "line" > < a name = "l00527" > < / a > < span class = "lineno" > 527< / span >   }< / div >
< div class = "line" > < a name = "l00528" > < / a > < span class = "lineno" > 528< / span >   status_ = OPTIMAL;< / div >
< div class = "line" > < a name = "l00529" > < / a > < span class = "lineno" > 529< / span >   < a class = "code" href = "stats_8h.html#a3c3e6b102f0d91c523099325c98e1887" > IF_STATS_ENABLED< / a > (< a class = "code" href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > (1) < < stats_.StatString());< / div >
< div class = "line" > < a name = "l00530" > < / a > < span class = "lineno" > 530< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00531" > < / a > < span class = "lineno" > 531< / span >   }< / div >
< div class = "line" > < a name = "l00532" > < / a > < span class = "lineno" > 532< / span >   < / div >
< div class = "line" > < a name = "l00533" > < / a > < span class = "lineno" > 533< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00534" > < / a > < span class = "lineno" > 534< / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "classoperations__research_1_1_generic_min_cost_flow.html" > GenericMinCostFlow< / a > < < a class = "code" href = "namespaceutil.html#a2f76166dbe0c4055a1f256235ad00478" > Graph< / a > , ArcFlowType,< / div >
< div class = "line" > < a name = "l00535" > < / a > < span class = "lineno" > 535< / span >   ArcScaledCostType> ::ResetFirstAdmissibleArcs() {< / div >
< div class = "line" > < a name = "l00536" > < / a > < span class = "lineno" > 536< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > node = 0; node < graph_-> num_nodes(); ++node) {< / div >
< div class = "line" > < a name = "l00537" > < / a > < span class = "lineno" > 537< / span >   first_admissible_arc_.Set(node,< / div >
< div class = "line" > < a name = "l00538" > < / a > < span class = "lineno" > 538< / span >   GetFirstOutgoingOrOppositeIncomingArc(node));< / div >
< div class = "line" > < a name = "l00539" > < / a > < span class = "lineno" > 539< / span >   }< / div >
< div class = "line" > < a name = "l00540" > < / a > < span class = "lineno" > 540< / span >   }< / div >
< div class = "line" > < a name = "l00541" > < / a > < span class = "lineno" > 541< / span >   < / div >
< div class = "line" > < a name = "l00542" > < / a > < span class = "lineno" > 542< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00543" > < / a > < span class = "lineno" > 543< / span >   < span class = "keywordtype" > void< / span > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::ScaleCosts() {< / div >
< div class = "line" > < a name = "l00544" > < / a > < span class = "lineno" > 544< / span >   < a class = "code" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a name = "l00545" > < / a > < span class = "lineno" > 545< / span >   cost_scaling_factor_ = graph_-> num_nodes() + 1;< / div >
< div class = "line" > < a name = "l00546" > < / a > < span class = "lineno" > 546< / span >   epsilon_ = 1LL;< / div >
< div class = "line" > < a name = "l00547" > < / a > < span class = "lineno" > 547< / span >   < a class = "code" href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > (3) < < < span class = "stringliteral" > " Number of nodes in the graph = " < / span > < < graph_-> num_nodes();< / div >
< div class = "line" > < a name = "l00548" > < / a > < span class = "lineno" > 548< / span >   < a class = "code" href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > (3) < < < span class = "stringliteral" > " Number of arcs in the graph = " < / span > < < graph_-> num_arcs();< / div >
< div class = "line" > < a name = "l00549" > < / a > < span class = "lineno" > 549< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc = 0; arc < graph_-> num_arcs(); ++arc) {< / div >
< div class = "line" > < a name = "l00550" > < / a > < span class = "lineno" > 550< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#aee97ac67f280d35acdef2c5d461a85c3" > CostValue< / a > < a class = "code" href = "routing__flow_8cc.html#a75d7b5e4cab1e156cc7a2c5eba1e16f1" > cost< / a > = scaled_arc_unit_cost_[arc] * cost_scaling_factor_;< / div >
< div class = "line" > < a name = "l00551" > < / a > < span class = "lineno" > 551< / span >   scaled_arc_unit_cost_.Set(arc, < a class = "code" href = "routing__flow_8cc.html#a75d7b5e4cab1e156cc7a2c5eba1e16f1" > cost< / a > );< / div >
< div class = "line" > < a name = "l00552" > < / a > < span class = "lineno" > 552< / span >   scaled_arc_unit_cost_.Set(Opposite(arc), -< a class = "code" href = "routing__flow_8cc.html#a75d7b5e4cab1e156cc7a2c5eba1e16f1" > cost< / a > );< / div >
< div class = "line" > < a name = "l00553" > < / a > < span class = "lineno" > 553< / span >   epsilon_ = < a class = "code" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > (epsilon_, < a class = "code" href = "classoperations__research_1_1_math_util.html#a5a6f14696b2a09c97b58e4f0989b19e7" > MathUtil::Abs< / a > (< a class = "code" href = "routing__flow_8cc.html#a75d7b5e4cab1e156cc7a2c5eba1e16f1" > cost< / a > ));< / div >
< div class = "line" > < a name = "l00554" > < / a > < span class = "lineno" > 554< / span >   }< / div >
< div class = "line" > < a name = "l00555" > < / a > < span class = "lineno" > 555< / span >   < a class = "code" href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > (3) < < < span class = "stringliteral" > " Initial epsilon = " < / span > < < epsilon_;< / div >
< div class = "line" > < a name = "l00556" > < / a > < span class = "lineno" > 556< / span >   < a class = "code" href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > (3) < < < span class = "stringliteral" > " Cost scaling factor = " < / span > < < cost_scaling_factor_;< / div >
< div class = "line" > < a name = "l00557" > < / a > < span class = "lineno" > 557< / span >   }< / div >
< div class = "line" > < a name = "l00558" > < / a > < span class = "lineno" > 558< / span >   < / div >
< div class = "line" > < a name = "l00559" > < / a > < span class = "lineno" > 559< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00560" > < / a > < span class = "lineno" > 560< / span >   < span class = "keywordtype" > void< / span > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::UnscaleCosts() {< / div >
< div class = "line" > < a name = "l00561" > < / a > < span class = "lineno" > 561< / span >   < a class = "code" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a name = "l00562" > < / a > < span class = "lineno" > 562< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc = 0; arc < graph_-> num_arcs(); ++arc) {< / div >
< div class = "line" > < a name = "l00563" > < / a > < span class = "lineno" > 563< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#aee97ac67f280d35acdef2c5d461a85c3" > CostValue< / a > < a class = "code" href = "routing__flow_8cc.html#a75d7b5e4cab1e156cc7a2c5eba1e16f1" > cost< / a > = scaled_arc_unit_cost_[arc] / cost_scaling_factor_;< / div >
< div class = "line" > < a name = "l00564" > < / a > < span class = "lineno" > 564< / span >   scaled_arc_unit_cost_.Set(arc, < a class = "code" href = "routing__flow_8cc.html#a75d7b5e4cab1e156cc7a2c5eba1e16f1" > cost< / a > );< / div >
< div class = "line" > < a name = "l00565" > < / a > < span class = "lineno" > 565< / span >   scaled_arc_unit_cost_.Set(Opposite(arc), -< a class = "code" href = "routing__flow_8cc.html#a75d7b5e4cab1e156cc7a2c5eba1e16f1" > cost< / a > );< / div >
< div class = "line" > < a name = "l00566" > < / a > < span class = "lineno" > 566< / span >   }< / div >
< div class = "line" > < a name = "l00567" > < / a > < span class = "lineno" > 567< / span >   cost_scaling_factor_ = 1;< / div >
< div class = "line" > < a name = "l00568" > < / a > < span class = "lineno" > 568< / span >   }< / div >
< div class = "line" > < a name = "l00569" > < / a > < span class = "lineno" > 569< / span >   < / div >
< div class = "line" > < a name = "l00570" > < / a > < span class = "lineno" > 570< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00571" > < / a > < span class = "lineno" > 571< / span >   < span class = "keywordtype" > void< / span > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::Optimize() {< / div >
< div class = "line" > < a name = "l00572" > < / a > < span class = "lineno" > 572< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#aee97ac67f280d35acdef2c5d461a85c3" > CostValue< / a > kEpsilonMin = 1LL;< / div >
< div class = "line" > < a name = "l00573" > < / a > < span class = "lineno" > 573< / span >   num_relabels_since_last_price_update_ = 0;< / div >
< div class = "line" > < a name = "l00574" > < / a > < span class = "lineno" > 574< / span >   < span class = "keywordflow" > do< / span > {< / div >
< div class = "line" > < a name = "l00575" > < / a > < span class = "lineno" > 575< / span >   < span class = "comment" > // Avoid epsilon_ == 0.< / span > < / div >
< div class = "line" > < a name = "l00576" > < / a > < span class = "lineno" > 576< / span >   epsilon_ = < a class = "code" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > (epsilon_ / alpha_, kEpsilonMin);< / div >
< div class = "line" > < a name = "l00577" > < / a > < span class = "lineno" > 577< / span >   < a class = "code" href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > (3) < < < span class = "stringliteral" > " Epsilon changed to: " < / span > < < epsilon_;< / div >
< div class = "line" > < a name = "l00578" > < / a > < span class = "lineno" > 578< / span >   Refine();< / div >
< div class = "line" > < a name = "l00579" > < / a > < span class = "lineno" > 579< / span >   } < span class = "keywordflow" > while< / span > (epsilon_ != 1LL & & status_ != INFEASIBLE);< / div >
< div class = "line" > < a name = "l00580" > < / a > < span class = "lineno" > 580< / span >   < span class = "keywordflow" > if< / span > (status_ == NOT_SOLVED) {< / div >
< div class = "line" > < a name = "l00581" > < / a > < span class = "lineno" > 581< / span >   status_ = < a class = "code" href = "namespaceoperations__research_1_1data_1_1vbp.html#a4604191fbd84a43686f44c25d7bd0161a2579881e7c83261bc21bafb5a5c92cad" > OPTIMAL< / a > ;< / div >
< div class = "line" > < a name = "l00582" > < / a > < span class = "lineno" > 582< / span >   }< / div >
< div class = "line" > < a name = "l00583" > < / a > < span class = "lineno" > 583< / span >   }< / div >
< div class = "line" > < a name = "l00584" > < / a > < span class = "lineno" > 584< / span >   < / div >
< div class = "line" > < a name = "l00585" > < / a > < span class = "lineno" > 585< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00586" > < / a > < span class = "lineno" > 586< / span >   < span class = "keywordtype" > void< / span > GenericMinCostFlow< < a class = "code" href = "namespaceutil.html#a2f76166dbe0c4055a1f256235ad00478" > Graph< / a > , ArcFlowType,< / div >
< div class = "line" > < a name = "l00587" > < / a > < span class = "lineno" > 587< / span >   ArcScaledCostType> ::SaturateAdmissibleArcs() {< / div >
< div class = "line" > < a name = "l00588" > < / a > < span class = "lineno" > 588< / span >   < a class = "code" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a name = "l00589" > < / a > < span class = "lineno" > 589< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > node = 0; node < graph_-> num_nodes(); ++node) {< / div >
< div class = "line" > < a name = "l00590" > < / a > < span class = "lineno" > 590< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#aee97ac67f280d35acdef2c5d461a85c3" > CostValue< / a > tail_potential = node_potential_[node];< / div >
< div class = "line" > < a name = "l00591" > < / a > < span class = "lineno" > 591< / span >   < span class = "keywordflow" > for< / span > (OutgoingOrOppositeIncomingArcIterator it(*graph_, node,< / div >
< div class = "line" > < a name = "l00592" > < / a > < span class = "lineno" > 592< / span >   first_admissible_arc_[node]);< / div >
< div class = "line" > < a name = "l00593" > < / a > < span class = "lineno" > 593< / span >   it.Ok(); it.Next()) {< / div >
< div class = "line" > < a name = "l00594" > < / a > < span class = "lineno" > 594< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc = it.Index();< / div >
< div class = "line" > < a name = "l00595" > < / a > < span class = "lineno" > 595< / span >   < span class = "keywordflow" > if< / span > (FastIsAdmissible(arc, tail_potential)) {< / div >
< div class = "line" > < a name = "l00596" > < / a > < span class = "lineno" > 596< / span >   FastPushFlow(residual_arc_capacity_[arc], arc, node);< / div >
< div class = "line" > < a name = "l00597" > < / a > < span class = "lineno" > 597< / span >   }< / div >
< div class = "line" > < a name = "l00598" > < / a > < span class = "lineno" > 598< / span >   }< / div >
< div class = "line" > < a name = "l00599" > < / a > < span class = "lineno" > 599< / span >   < / div >
< div class = "line" > < a name = "l00600" > < / a > < span class = "lineno" > 600< / span >   < span class = "comment" > // We just saturated all the admissible arcs, so there are no arcs with a< / span > < / div >
< div class = "line" > < a name = "l00601" > < / a > < span class = "lineno" > 601< / span >   < span class = "comment" > // positive residual capacity that are incident to the current node.< / span > < / div >
< div class = "line" > < a name = "l00602" > < / a > < span class = "lineno" > 602< / span >   < span class = "comment" > // Moreover, during the course of the algorithm, if the residual capacity of< / span > < / div >
< div class = "line" > < a name = "l00603" > < / a > < span class = "lineno" > 603< / span >   < span class = "comment" > // such an arc becomes positive again, then the arc is still not admissible< / span > < / div >
< div class = "line" > < a name = "l00604" > < / a > < span class = "lineno" > 604< / span >   < span class = "comment" > // until we relabel the node (because the reverse arc was admissible for< / span > < / div >
< div class = "line" > < a name = "l00605" > < / a > < span class = "lineno" > 605< / span >   < span class = "comment" > // this to happen). In conclusion, the optimization below is correct.< / span > < / div >
< div class = "line" > < a name = "l00606" > < / a > < span class = "lineno" > 606< / span >   first_admissible_arc_[node] = Graph::kNilArc;< / div >
< div class = "line" > < a name = "l00607" > < / a > < span class = "lineno" > 607< / span >   }< / div >
< div class = "line" > < a name = "l00608" > < / a > < span class = "lineno" > 608< / span >   }< / div >
< div class = "line" > < a name = "l00609" > < / a > < span class = "lineno" > 609< / span >   < / div >
< div class = "line" > < a name = "l00610" > < / a > < span class = "lineno" > 610< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00611" > < / a > < span class = "lineno" > 611< / span >   < span class = "keywordtype" > void< / span > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::PushFlow(< / div >
< div class = "line" > < a name = "l00612" > < / a > < span class = "lineno" > 612< / span >   < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > flow, < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc) {< / div >
< div class = "line" > < a name = "l00613" > < / a > < span class = "lineno" > 613< / span >   < a class = "code" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a name = "l00614" > < / a > < span class = "lineno" > 614< / span >   FastPushFlow(flow, arc, Tail(arc));< / div >
< div class = "line" > < a name = "l00615" > < / a > < span class = "lineno" > 615< / span >   }< / div >
< div class = "line" > < a name = "l00616" > < / a > < span class = "lineno" > 616< / span >   < / div >
< div class = "line" > < a name = "l00617" > < / a > < span class = "lineno" > 617< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00618" > < / a > < span class = "lineno" > 618< / span >   < span class = "keywordtype" > void< / span > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::FastPushFlow(< / div >
< div class = "line" > < a name = "l00619" > < / a > < span class = "lineno" > 619< / span >   < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > flow, < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc, < a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > < a class = "code" href = "routing__flow_8cc.html#a64e7efc5529154ba56903e75f5300990" > tail< / a > ) {< / div >
< div class = "line" > < a name = "l00620" > < / a > < span class = "lineno" > 620< / span >   < a class = "code" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a name = "l00621" > < / a > < span class = "lineno" > 621< / span >   < a class = "code" href = "base_2logging_8h.html#ae89df3243bbb8341130c7b3f44145ea0" > DCHECK_EQ< / a > (Tail(arc), < a class = "code" href = "routing__flow_8cc.html#a64e7efc5529154ba56903e75f5300990" > tail< / a > );< / div >
< div class = "line" > < a name = "l00622" > < / a > < span class = "lineno" > 622< / span >   < a class = "code" href = "base_2logging_8h.html#ab4f56aa24c4c9cddc47a6abd2d747f9a" > DCHECK_GT< / a > (residual_arc_capacity_[arc], 0);< / div >
< div class = "line" > < a name = "l00623" > < / a > < span class = "lineno" > 623< / span >   < a class = "code" href = "base_2logging_8h.html#a4395e95bab44e222cb2e77251017a0e2" > DCHECK_LE< / a > (flow, residual_arc_capacity_[arc]);< / div >
< div class = "line" > < a name = "l00624" > < / a > < span class = "lineno" > 624< / span >   < span class = "comment" > // Reduce the residual capacity on the arc by flow.< / span > < / div >
< div class = "line" > < a name = "l00625" > < / a > < span class = "lineno" > 625< / span >   residual_arc_capacity_.Set(arc, residual_arc_capacity_[arc] - flow);< / div >
< div class = "line" > < a name = "l00626" > < / a > < span class = "lineno" > 626< / span >   < span class = "comment" > // Increase the residual capacity on the opposite arc by flow.< / span > < / div >
< div class = "line" > < a name = "l00627" > < / a > < span class = "lineno" > 627< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > opposite = Opposite(arc);< / div >
< div class = "line" > < a name = "l00628" > < / a > < span class = "lineno" > 628< / span >   residual_arc_capacity_.Set(opposite, residual_arc_capacity_[opposite] + flow);< / div >
< div class = "line" > < a name = "l00629" > < / a > < span class = "lineno" > 629< / span >   < span class = "comment" > // Update the excesses at the tail and head of the arc.< / span > < / div >
< div class = "line" > < a name = "l00630" > < / a > < span class = "lineno" > 630< / span >   node_excess_.Set(< a class = "code" href = "routing__flow_8cc.html#a64e7efc5529154ba56903e75f5300990" > tail< / a > , node_excess_[< a class = "code" href = "routing__flow_8cc.html#a64e7efc5529154ba56903e75f5300990" > tail< / a > ] - flow);< / div >
< div class = "line" > < a name = "l00631" > < / a > < span class = "lineno" > 631< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > < a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > = Head(arc);< / div >
< div class = "line" > < a name = "l00632" > < / a > < span class = "lineno" > 632< / span >   node_excess_.Set(< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > , node_excess_[< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ] + flow);< / div >
< div class = "line" > < a name = "l00633" > < / a > < span class = "lineno" > 633< / span >   }< / div >
< div class = "line" > < a name = "l00634" > < / a > < span class = "lineno" > 634< / span >   < / div >
< div class = "line" > < a name = "l00635" > < / a > < span class = "lineno" > 635< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00636" > < / a > < span class = "lineno" > 636< / span >   < span class = "keywordtype" > void< / span > GenericMinCostFlow< < a class = "code" href = "namespaceutil.html#a2f76166dbe0c4055a1f256235ad00478" > Graph< / a > , ArcFlowType,< / div >
< div class = "line" > < a name = "l00637" > < / a > < span class = "lineno" > 637< / span >   ArcScaledCostType> ::InitializeActiveNodeStack() {< / div >
< div class = "line" > < a name = "l00638" > < / a > < span class = "lineno" > 638< / span >   < a class = "code" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a name = "l00639" > < / a > < span class = "lineno" > 639< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (active_nodes_.empty());< / div >
< div class = "line" > < a name = "l00640" > < / a > < span class = "lineno" > 640< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > node = 0; node < graph_-> num_nodes(); ++node) {< / div >
< div class = "line" > < a name = "l00641" > < / a > < span class = "lineno" > 641< / span >   < span class = "keywordflow" > if< / span > (IsActive(node)) {< / div >
< div class = "line" > < a name = "l00642" > < / a > < span class = "lineno" > 642< / span >   active_nodes_.push(node);< / div >
< div class = "line" > < a name = "l00643" > < / a > < span class = "lineno" > 643< / span >   }< / div >
< div class = "line" > < a name = "l00644" > < / a > < span class = "lineno" > 644< / span >   }< / div >
< div class = "line" > < a name = "l00645" > < / a > < span class = "lineno" > 645< / span >   }< / div >
< div class = "line" > < a name = "l00646" > < / a > < span class = "lineno" > 646< / span >   < / div >
< div class = "line" > < a name = "l00647" > < / a > < span class = "lineno" > 647< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00648" > < / a > < span class = "lineno" > 648< / span >   < span class = "keywordtype" > void< / span > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::UpdatePrices() {< / div >
< div class = "line" > < a name = "l00649" > < / a > < span class = "lineno" > 649< / span >   < a class = "code" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a name = "l00650" > < / a > < span class = "lineno" > 650< / span >   < / div >
< div class = "line" > < a name = "l00651" > < / a > < span class = "lineno" > 651< / span >   < span class = "comment" > // The algorithm works as follows. Start with a set of nodes S containing all< / span > < / div >
< div class = "line" > < a name = "l00652" > < / a > < span class = "lineno" > 652< / span >   < span class = "comment" > // the nodes with negative excess. Expand the set along reverse admissible< / span > < / div >
< div class = "line" > < a name = "l00653" > < / a > < span class = "lineno" > 653< / span >   < span class = "comment" > // arcs. If at the end, the complement of S contains at least one node with< / span > < / div >
< div class = "line" > < a name = "l00654" > < / a > < span class = "lineno" > 654< / span >   < span class = "comment" > // positive excess, relabel all the nodes in the complement of S by< / span > < / div >
< div class = "line" > < a name = "l00655" > < / a > < span class = "lineno" > 655< / span >   < span class = "comment" > // subtracting epsilon from their current potential. See the paper cited in< / span > < / div >
< div class = "line" > < a name = "l00656" > < / a > < span class = "lineno" > 656< / span >   < span class = "comment" > // the .h file.< / span > < / div >
< div class = "line" > < a name = "l00657" > < / a > < span class = "lineno" > 657< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00658" > < / a > < span class = "lineno" > 658< / span >   < span class = "comment" > // After this relabeling is done, the heuristic is reapplied by extending S as< / span > < / div >
< div class = "line" > < a name = "l00659" > < / a > < span class = "lineno" > 659< / span >   < span class = "comment" > // much as possible, relabeling the complement of S, and so on until there is< / span > < / div >
< div class = "line" > < a name = "l00660" > < / a > < span class = "lineno" > 660< / span >   < span class = "comment" > // no node with positive excess that is not in S. Note that this is not< / span > < / div >
< div class = "line" > < a name = "l00661" > < / a > < span class = "lineno" > 661< / span >   < span class = "comment" > // described in the paper.< / span > < / div >
< div class = "line" > < a name = "l00662" > < / a > < span class = "lineno" > 662< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00663" > < / a > < span class = "lineno" > 663< / span >   < span class = "comment" > // Note(user): The triggering mechanism of this UpdatePrices() is really< / span > < / div >
< div class = "line" > < a name = "l00664" > < / a > < span class = "lineno" > 664< / span >   < span class = "comment" > // important; if it is not done properly it may degrade performance!< / span > < / div >
< div class = "line" > < a name = "l00665" > < / a > < span class = "lineno" > 665< / span >   < / div >
< div class = "line" > < a name = "l00666" > < / a > < span class = "lineno" > 666< / span >   < span class = "comment" > // This represents the set S.< / span > < / div >
< div class = "line" > < a name = "l00667" > < / a > < span class = "lineno" > 667< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > num_nodes = graph_-> num_nodes();< / div >
< div class = "line" > < a name = "l00668" > < / a > < span class = "lineno" > 668< / span >   std::vector< NodeIndex> bfs_queue;< / div >
< div class = "line" > < a name = "l00669" > < / a > < span class = "lineno" > 669< / span >   std::vector< bool> node_in_queue(num_nodes, < span class = "keyword" > false< / span > );< / div >
< div class = "line" > < a name = "l00670" > < / a > < span class = "lineno" > 670< / span >   < / div >
< div class = "line" > < a name = "l00671" > < / a > < span class = "lineno" > 671< / span >   < span class = "comment" > // This is used to update the potential of the nodes not in S.< / span > < / div >
< div class = "line" > < a name = "l00672" > < / a > < span class = "lineno" > 672< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#aee97ac67f280d35acdef2c5d461a85c3" > CostValue< / a > kMinCostValue = < a class = "code" href = "alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045" > std::numeric_limits< CostValue> ::min< / a > ();< / div >
< div class = "line" > < a name = "l00673" > < / a > < span class = "lineno" > 673< / span >   std::vector< CostValue> min_non_admissible_potential(num_nodes, kMinCostValue);< / div >
< div class = "line" > < a name = "l00674" > < / a > < span class = "lineno" > 674< / span >   std::vector< NodeIndex> nodes_to_process;< / div >
< div class = "line" > < a name = "l00675" > < / a > < span class = "lineno" > 675< / span >   < / div >
< div class = "line" > < a name = "l00676" > < / a > < span class = "lineno" > 676< / span >   < span class = "comment" > // Sum of the positive excesses out of S, used for early exit.< / span > < / div >
< div class = "line" > < a name = "l00677" > < / a > < span class = "lineno" > 677< / span >   < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > remaining_excess = 0;< / div >
< div class = "line" > < a name = "l00678" > < / a > < span class = "lineno" > 678< / span >   < / div >
< div class = "line" > < a name = "l00679" > < / a > < span class = "lineno" > 679< / span >   < span class = "comment" > // First consider the nodes which have a negative excess.< / span > < / div >
< div class = "line" > < a name = "l00680" > < / a > < span class = "lineno" > 680< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > node = 0; node < num_nodes; ++node) {< / div >
< div class = "line" > < a name = "l00681" > < / a > < span class = "lineno" > 681< / span >   < span class = "keywordflow" > if< / span > (node_excess_[node] < 0) {< / div >
< div class = "line" > < a name = "l00682" > < / a > < span class = "lineno" > 682< / span >   bfs_queue.push_back(node);< / div >
< div class = "line" > < a name = "l00683" > < / a > < span class = "lineno" > 683< / span >   node_in_queue[node] = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00684" > < / a > < span class = "lineno" > 684< / span >   < / div >
< div class = "line" > < a name = "l00685" > < / a > < span class = "lineno" > 685< / span >   < span class = "comment" > // This uses the fact that the sum of excesses is always 0.< / span > < / div >
< div class = "line" > < a name = "l00686" > < / a > < span class = "lineno" > 686< / span >   remaining_excess -= node_excess_[node];< / div >
< div class = "line" > < a name = "l00687" > < / a > < span class = "lineno" > 687< / span >   }< / div >
< div class = "line" > < a name = "l00688" > < / a > < span class = "lineno" > 688< / span >   }< / div >
< div class = "line" > < a name = "l00689" > < / a > < span class = "lineno" > 689< / span >   < / div >
< div class = "line" > < a name = "l00690" > < / a > < span class = "lineno" > 690< / span >   < span class = "comment" > // All the nodes not yet in the bfs_queue will have their potential changed by< / span > < / div >
< div class = "line" > < a name = "l00691" > < / a > < span class = "lineno" > 691< / span >   < span class = "comment" > // +potential_delta (which becomes more and more negative at each pass). This< / span > < / div >
< div class = "line" > < a name = "l00692" > < / a > < span class = "lineno" > 692< / span >   < span class = "comment" > // update is applied when a node is pushed into the queue and at the end of< / span > < / div >
< div class = "line" > < a name = "l00693" > < / a > < span class = "lineno" > 693< / span >   < span class = "comment" > // the function for the nodes that are still unprocessed.< / span > < / div >
< div class = "line" > < a name = "l00694" > < / a > < span class = "lineno" > 694< / span >   < a class = "code" href = "namespaceoperations__research.html#aee97ac67f280d35acdef2c5d461a85c3" > CostValue< / a > potential_delta = 0;< / div >
< div class = "line" > < a name = "l00695" > < / a > < span class = "lineno" > 695< / span >   < / div >
< div class = "line" > < a name = "l00696" > < / a > < span class = "lineno" > 696< / span >   < span class = "keywordtype" > int< / span > queue_index = 0;< / div >
< div class = "line" > < a name = "l00697" > < / a > < span class = "lineno" > 697< / span >   < span class = "keywordflow" > while< / span > (remaining_excess > 0) {< / div >
< div class = "line" > < a name = "l00698" > < / a > < span class = "lineno" > 698< / span >   < span class = "comment" > // Reverse BFS that expands S as much as possible in the reverse admissible< / span > < / div >
< div class = "line" > < a name = "l00699" > < / a > < span class = "lineno" > 699< / span >   < span class = "comment" > // graph. Once S cannot be expanded anymore, perform a relabeling on the< / span > < / div >
< div class = "line" > < a name = "l00700" > < / a > < span class = "lineno" > 700< / span >   < span class = "comment" > // nodes not in S but that can reach it in one arc and try to expand S< / span > < / div >
< div class = "line" > < a name = "l00701" > < / a > < span class = "lineno" > 701< / span >   < span class = "comment" > // again.< / span > < / div >
< div class = "line" > < a name = "l00702" > < / a > < span class = "lineno" > 702< / span >   < span class = "keywordflow" > for< / span > (; queue_index < bfs_queue.size(); ++queue_index) {< / div >
< div class = "line" > < a name = "l00703" > < / a > < span class = "lineno" > 703< / span >   < a class = "code" href = "base_2logging_8h.html#aae2dc65d9ea248d54bf39daa986dd295" > DCHECK_GE< / a > (num_nodes, bfs_queue.size());< / div >
< div class = "line" > < a name = "l00704" > < / a > < span class = "lineno" > 704< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > node = bfs_queue[queue_index];< / div >
< div class = "line" > < a name = "l00705" > < / a > < span class = "lineno" > 705< / span >   < span class = "keywordflow" > for< / span > (OutgoingOrOppositeIncomingArcIterator it(*graph_, node); it.Ok();< / div >
< div class = "line" > < a name = "l00706" > < / a > < span class = "lineno" > 706< / span >   it.Next()) {< / div >
< div class = "line" > < a name = "l00707" > < / a > < span class = "lineno" > 707< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > < a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > = Head(it.Index());< / div >
< div class = "line" > < a name = "l00708" > < / a > < span class = "lineno" > 708< / span >   < span class = "keywordflow" > if< / span > (node_in_queue[< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ]) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a name = "l00709" > < / a > < span class = "lineno" > 709< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > opposite_arc = Opposite(it.Index());< / div >
< div class = "line" > < a name = "l00710" > < / a > < span class = "lineno" > 710< / span >   < span class = "keywordflow" > if< / span > (residual_arc_capacity_[opposite_arc] > 0) {< / div >
< div class = "line" > < a name = "l00711" > < / a > < span class = "lineno" > 711< / span >   node_potential_[< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ] += potential_delta;< / div >
< div class = "line" > < a name = "l00712" > < / a > < span class = "lineno" > 712< / span >   < span class = "keywordflow" > if< / span > (ReducedCost(opposite_arc) < 0) {< / div >
< div class = "line" > < a name = "l00713" > < / a > < span class = "lineno" > 713< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (IsAdmissible(opposite_arc));< / div >
< div class = "line" > < a name = "l00714" > < / a > < span class = "lineno" > 714< / span >   < / div >
< div class = "line" > < a name = "l00715" > < / a > < span class = "lineno" > 715< / span >   < span class = "comment" > // TODO(user): Try to steal flow if node_excess_[head] > 0.< / span > < / div >
< div class = "line" > < a name = "l00716" > < / a > < span class = "lineno" > 716< / span >   < span class = "comment" > // An initial experiment didn' t show a big speedup though.< / span > < / div >
< div class = "line" > < a name = "l00717" > < / a > < span class = "lineno" > 717< / span >   < / div >
< div class = "line" > < a name = "l00718" > < / a > < span class = "lineno" > 718< / span >   remaining_excess -= node_excess_[< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ];< / div >
< div class = "line" > < a name = "l00719" > < / a > < span class = "lineno" > 719< / span >   < span class = "keywordflow" > if< / span > (remaining_excess == 0) {< / div >
< div class = "line" > < a name = "l00720" > < / a > < span class = "lineno" > 720< / span >   node_potential_[< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ] -= potential_delta;< / div >
< div class = "line" > < a name = "l00721" > < / a > < span class = "lineno" > 721< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00722" > < / a > < span class = "lineno" > 722< / span >   }< / div >
< div class = "line" > < a name = "l00723" > < / a > < span class = "lineno" > 723< / span >   bfs_queue.push_back(< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > );< / div >
< div class = "line" > < a name = "l00724" > < / a > < span class = "lineno" > 724< / span >   node_in_queue[< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ] = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00725" > < / a > < span class = "lineno" > 725< / span >   < span class = "keywordflow" > if< / span > (potential_delta < 0) {< / div >
< div class = "line" > < a name = "l00726" > < / a > < span class = "lineno" > 726< / span >   first_admissible_arc_[< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ] =< / div >
< div class = "line" > < a name = "l00727" > < / a > < span class = "lineno" > 727< / span >   GetFirstOutgoingOrOppositeIncomingArc(< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > );< / div >
< div class = "line" > < a name = "l00728" > < / a > < span class = "lineno" > 728< / span >   }< / div >
< div class = "line" > < a name = "l00729" > < / a > < span class = "lineno" > 729< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00730" > < / a > < span class = "lineno" > 730< / span >   < span class = "comment" > // The opposite_arc is not admissible but is in the residual graph;< / span > < / div >
< div class = "line" > < a name = "l00731" > < / a > < span class = "lineno" > 731< / span >   < span class = "comment" > // this updates its min_non_admissible_potential.< / span > < / div >
< div class = "line" > < a name = "l00732" > < / a > < span class = "lineno" > 732< / span >   node_potential_[< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ] -= potential_delta;< / div >
< div class = "line" > < a name = "l00733" > < / a > < span class = "lineno" > 733< / span >   < span class = "keywordflow" > if< / span > (min_non_admissible_potential[< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ] == kMinCostValue) {< / div >
< div class = "line" > < a name = "l00734" > < / a > < span class = "lineno" > 734< / span >   nodes_to_process.push_back(< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > );< / div >
< div class = "line" > < a name = "l00735" > < / a > < span class = "lineno" > 735< / span >   }< / div >
< div class = "line" > < a name = "l00736" > < / a > < span class = "lineno" > 736< / span >   min_non_admissible_potential[< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ] = < a class = "code" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > (< / div >
< div class = "line" > < a name = "l00737" > < / a > < span class = "lineno" > 737< / span >   min_non_admissible_potential[< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ],< / div >
< div class = "line" > < a name = "l00738" > < / a > < span class = "lineno" > 738< / span >   node_potential_[node] - scaled_arc_unit_cost_[opposite_arc]);< / div >
< div class = "line" > < a name = "l00739" > < / a > < span class = "lineno" > 739< / span >   }< / div >
< div class = "line" > < a name = "l00740" > < / a > < span class = "lineno" > 740< / span >   }< / div >
< div class = "line" > < a name = "l00741" > < / a > < span class = "lineno" > 741< / span >   }< / div >
< div class = "line" > < a name = "l00742" > < / a > < span class = "lineno" > 742< / span >   < span class = "keywordflow" > if< / span > (remaining_excess == 0) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00743" > < / a > < span class = "lineno" > 743< / span >   }< / div >
< div class = "line" > < a name = "l00744" > < / a > < span class = "lineno" > 744< / span >   < span class = "keywordflow" > if< / span > (remaining_excess == 0) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00745" > < / a > < span class = "lineno" > 745< / span >   < / div >
< div class = "line" > < a name = "l00746" > < / a > < span class = "lineno" > 746< / span >   < span class = "comment" > // Decrease by as much as possible instead of decreasing by epsilon.< / span > < / div >
< div class = "line" > < a name = "l00747" > < / a > < span class = "lineno" > 747< / span >   < span class = "comment" > // TODO(user): Is it worth the extra loop?< / span > < / div >
< div class = "line" > < a name = "l00748" > < / a > < span class = "lineno" > 748< / span >   < a class = "code" href = "namespaceoperations__research.html#aee97ac67f280d35acdef2c5d461a85c3" > CostValue< / a > max_potential_diff = kMinCostValue;< / div >
< div class = "line" > < a name = "l00749" > < / a > < span class = "lineno" > 749< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < nodes_to_process.size(); ++i) {< / div >
< div class = "line" > < a name = "l00750" > < / a > < span class = "lineno" > 750< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > node = nodes_to_process[i];< / div >
< div class = "line" > < a name = "l00751" > < / a > < span class = "lineno" > 751< / span >   < span class = "keywordflow" > if< / span > (node_in_queue[node]) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a name = "l00752" > < / a > < span class = "lineno" > 752< / span >   max_potential_diff =< / div >
< div class = "line" > < a name = "l00753" > < / a > < span class = "lineno" > 753< / span >   < a class = "code" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > (max_potential_diff,< / div >
< div class = "line" > < a name = "l00754" > < / a > < span class = "lineno" > 754< / span >   min_non_admissible_potential[node] - node_potential_[node]);< / div >
< div class = "line" > < a name = "l00755" > < / a > < span class = "lineno" > 755< / span >   < span class = "keywordflow" > if< / span > (max_potential_diff == potential_delta) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00756" > < / a > < span class = "lineno" > 756< / span >   }< / div >
< div class = "line" > < a name = "l00757" > < / a > < span class = "lineno" > 757< / span >   < a class = "code" href = "base_2logging_8h.html#a4395e95bab44e222cb2e77251017a0e2" > DCHECK_LE< / a > (max_potential_diff, potential_delta);< / div >
< div class = "line" > < a name = "l00758" > < / a > < span class = "lineno" > 758< / span >   potential_delta = max_potential_diff - epsilon_;< / div >
< div class = "line" > < a name = "l00759" > < / a > < span class = "lineno" > 759< / span >   < / div >
< div class = "line" > < a name = "l00760" > < / a > < span class = "lineno" > 760< / span >   < span class = "comment" > // Loop over nodes_to_process_ and for each node, apply the first of the< / span > < / div >
< div class = "line" > < a name = "l00761" > < / a > < span class = "lineno" > 761< / span >   < span class = "comment" > // rules below that match or leave it in the queue for later iteration:< / span > < / div >
< div class = "line" > < a name = "l00762" > < / a > < span class = "lineno" > 762< / span >   < span class = "comment" > // - Remove it if it is already in the queue.< / span > < / div >
< div class = "line" > < a name = "l00763" > < / a > < span class = "lineno" > 763< / span >   < span class = "comment" > // - If the node is connected to S by an admissible arc after it is< / span > < / div >
< div class = "line" > < a name = "l00764" > < / a > < span class = "lineno" > 764< / span >   < span class = "comment" > // relabeled by +potential_delta, add it to bfs_queue_ and remove it from< / span > < / div >
< div class = "line" > < a name = "l00765" > < / a > < span class = "lineno" > 765< / span >   < span class = "comment" > // nodes_to_process.< / span > < / div >
< div class = "line" > < a name = "l00766" > < / a > < span class = "lineno" > 766< / span >   < span class = "keywordtype" > int< / span > < a class = "code" href = "pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > = 0;< / div >
< div class = "line" > < a name = "l00767" > < / a > < span class = "lineno" > 767< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < nodes_to_process.size(); ++i) {< / div >
< div class = "line" > < a name = "l00768" > < / a > < span class = "lineno" > 768< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > node = nodes_to_process[i];< / div >
< div class = "line" > < a name = "l00769" > < / a > < span class = "lineno" > 769< / span >   < span class = "keywordflow" > if< / span > (node_in_queue[node]) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a name = "l00770" > < / a > < span class = "lineno" > 770< / span >   < span class = "keywordflow" > if< / span > (node_potential_[node] + potential_delta < < / div >
< div class = "line" > < a name = "l00771" > < / a > < span class = "lineno" > 771< / span >   min_non_admissible_potential[node]) {< / div >
< div class = "line" > < a name = "l00772" > < / a > < span class = "lineno" > 772< / span >   node_potential_[node] += potential_delta;< / div >
< div class = "line" > < a name = "l00773" > < / a > < span class = "lineno" > 773< / span >   first_admissible_arc_[node] =< / div >
< div class = "line" > < a name = "l00774" > < / a > < span class = "lineno" > 774< / span >   GetFirstOutgoingOrOppositeIncomingArc(node);< / div >
< div class = "line" > < a name = "l00775" > < / a > < span class = "lineno" > 775< / span >   bfs_queue.push_back(node);< / div >
< div class = "line" > < a name = "l00776" > < / a > < span class = "lineno" > 776< / span >   node_in_queue[node] = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00777" > < / a > < span class = "lineno" > 777< / span >   remaining_excess -= node_excess_[node];< / div >
< div class = "line" > < a name = "l00778" > < / a > < span class = "lineno" > 778< / span >   < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a name = "l00779" > < / a > < span class = "lineno" > 779< / span >   }< / div >
< div class = "line" > < a name = "l00780" > < / a > < span class = "lineno" > 780< / span >   < / div >
< div class = "line" > < a name = "l00781" > < / a > < span class = "lineno" > 781< / span >   < span class = "comment" > // Keep the node for later iteration.< / span > < / div >
< div class = "line" > < a name = "l00782" > < / a > < span class = "lineno" > 782< / span >   nodes_to_process[< a class = "code" href = "pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > ] = node;< / div >
< div class = "line" > < a name = "l00783" > < / a > < span class = "lineno" > 783< / span >   ++< a class = "code" href = "pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > ;< / div >
< div class = "line" > < a name = "l00784" > < / a > < span class = "lineno" > 784< / span >   }< / div >
< div class = "line" > < a name = "l00785" > < / a > < span class = "lineno" > 785< / span >   nodes_to_process.resize(< a class = "code" href = "pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > );< / div >
< div class = "line" > < a name = "l00786" > < / a > < span class = "lineno" > 786< / span >   }< / div >
< div class = "line" > < a name = "l00787" > < / a > < span class = "lineno" > 787< / span >   < / div >
< div class = "line" > < a name = "l00788" > < / a > < span class = "lineno" > 788< / span >   < span class = "comment" > // Update the potentials of the nodes not yet processed.< / span > < / div >
< div class = "line" > < a name = "l00789" > < / a > < span class = "lineno" > 789< / span >   < span class = "keywordflow" > if< / span > (potential_delta == 0) < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a name = "l00790" > < / a > < span class = "lineno" > 790< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > node = 0; node < num_nodes; ++node) {< / div >
< div class = "line" > < a name = "l00791" > < / a > < span class = "lineno" > 791< / span >   < span class = "keywordflow" > if< / span > (!node_in_queue[node]) {< / div >
< div class = "line" > < a name = "l00792" > < / a > < span class = "lineno" > 792< / span >   node_potential_[node] += potential_delta;< / div >
< div class = "line" > < a name = "l00793" > < / a > < span class = "lineno" > 793< / span >   first_admissible_arc_[node] = GetFirstOutgoingOrOppositeIncomingArc(node);< / div >
< div class = "line" > < a name = "l00794" > < / a > < span class = "lineno" > 794< / span >   }< / div >
< div class = "line" > < a name = "l00795" > < / a > < span class = "lineno" > 795< / span >   }< / div >
< div class = "line" > < a name = "l00796" > < / a > < span class = "lineno" > 796< / span >   }< / div >
< div class = "line" > < a name = "l00797" > < / a > < span class = "lineno" > 797< / span >   < / div >
< div class = "line" > < a name = "l00798" > < / a > < span class = "lineno" > 798< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00799" > < / a > < span class = "lineno" > 799< / span >   < span class = "keywordtype" > void< / span > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::Refine() {< / div >
< div class = "line" > < a name = "l00800" > < / a > < span class = "lineno" > 800< / span >   < a class = "code" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a name = "l00801" > < / a > < span class = "lineno" > 801< / span >   SaturateAdmissibleArcs();< / div >
< div class = "line" > < a name = "l00802" > < / a > < span class = "lineno" > 802< / span >   InitializeActiveNodeStack();< / div >
< div class = "line" > < a name = "l00803" > < / a > < span class = "lineno" > 803< / span >   < / div >
< div class = "line" > < a name = "l00804" > < / a > < span class = "lineno" > 804< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > num_nodes = graph_-> num_nodes();< / div >
< div class = "line" > < a name = "l00805" > < / a > < span class = "lineno" > 805< / span >   < span class = "keywordflow" > while< / span > (status_ != INFEASIBLE & & !active_nodes_.empty()) {< / div >
< div class = "line" > < a name = "l00806" > < / a > < span class = "lineno" > 806< / span >   < span class = "comment" > // TODO(user): Experiment with different factors in front of num_nodes.< / span > < / div >
< div class = "line" > < a name = "l00807" > < / a > < span class = "lineno" > 807< / span >   < span class = "keywordflow" > if< / span > (num_relabels_since_last_price_update_ > = num_nodes) {< / div >
< div class = "line" > < a name = "l00808" > < / a > < span class = "lineno" > 808< / span >   num_relabels_since_last_price_update_ = 0;< / div >
< div class = "line" > < a name = "l00809" > < / a > < span class = "lineno" > 809< / span >   < span class = "keywordflow" > if< / span > (use_price_update_) {< / div >
< div class = "line" > < a name = "l00810" > < / a > < span class = "lineno" > 810< / span >   UpdatePrices();< / div >
< div class = "line" > < a name = "l00811" > < / a > < span class = "lineno" > 811< / span >   }< / div >
< div class = "line" > < a name = "l00812" > < / a > < span class = "lineno" > 812< / span >   }< / div >
< div class = "line" > < a name = "l00813" > < / a > < span class = "lineno" > 813< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > node = active_nodes_.top();< / div >
< div class = "line" > < a name = "l00814" > < / a > < span class = "lineno" > 814< / span >   active_nodes_.pop();< / div >
< div class = "line" > < a name = "l00815" > < / a > < span class = "lineno" > 815< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (IsActive(node));< / div >
< div class = "line" > < a name = "l00816" > < / a > < span class = "lineno" > 816< / span >   Discharge(node);< / div >
< div class = "line" > < a name = "l00817" > < / a > < span class = "lineno" > 817< / span >   }< / div >
< div class = "line" > < a name = "l00818" > < / a > < span class = "lineno" > 818< / span >   }< / div >
< div class = "line" > < a name = "l00819" > < / a > < span class = "lineno" > 819< / span >   < / div >
< div class = "line" > < a name = "l00820" > < / a > < span class = "lineno" > 820< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00821" > < / a > < span class = "lineno" > 821< / span >   < span class = "keywordtype" > void< / span > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::Discharge(< / div >
< div class = "line" > < a name = "l00822" > < / a > < span class = "lineno" > 822< / span >   < a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > node) {< / div >
< div class = "line" > < a name = "l00823" > < / a > < span class = "lineno" > 823< / span >   < a class = "code" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a name = "l00824" > < / a > < span class = "lineno" > 824< / span >   < span class = "keywordflow" > do< / span > {< / div >
< div class = "line" > < a name = "l00825" > < / a > < span class = "lineno" > 825< / span >   < span class = "comment" > // The node is initially active, and we exit as soon as it becomes< / span > < / div >
< div class = "line" > < a name = "l00826" > < / a > < span class = "lineno" > 826< / span >   < span class = "comment" > // inactive.< / span > < / div >
< div class = "line" > < a name = "l00827" > < / a > < span class = "lineno" > 827< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (IsActive(node));< / div >
< div class = "line" > < a name = "l00828" > < / a > < span class = "lineno" > 828< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#aee97ac67f280d35acdef2c5d461a85c3" > CostValue< / a > tail_potential = node_potential_[node];< / div >
< div class = "line" > < a name = "l00829" > < / a > < span class = "lineno" > 829< / span >   < span class = "keywordflow" > for< / span > (OutgoingOrOppositeIncomingArcIterator it(*graph_, node,< / div >
< div class = "line" > < a name = "l00830" > < / a > < span class = "lineno" > 830< / span >   first_admissible_arc_[node]);< / div >
< div class = "line" > < a name = "l00831" > < / a > < span class = "lineno" > 831< / span >   it.Ok(); it.Next()) {< / div >
< div class = "line" > < a name = "l00832" > < / a > < span class = "lineno" > 832< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc = it.Index();< / div >
< div class = "line" > < a name = "l00833" > < / a > < span class = "lineno" > 833< / span >   < span class = "keywordflow" > if< / span > (FastIsAdmissible(arc, tail_potential)) {< / div >
< div class = "line" > < a name = "l00834" > < / a > < span class = "lineno" > 834< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > < a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > = Head(arc);< / div >
< div class = "line" > < a name = "l00835" > < / a > < span class = "lineno" > 835< / span >   < span class = "keywordflow" > if< / span > (!LookAhead(arc, tail_potential, < a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > )) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a name = "l00836" > < / a > < span class = "lineno" > 836< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > bool< / span > head_active_before_push = IsActive(< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > );< / div >
< div class = "line" > < a name = "l00837" > < / a > < span class = "lineno" > 837< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > < a class = "code" href = "resource_8cc.html#af12056bc2a8e3ec563f0940d87abbd2e" > delta< / a > =< / div >
< div class = "line" > < a name = "l00838" > < / a > < span class = "lineno" > 838< / span >   < a class = "code" href = "alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045" > std::min< / a > (node_excess_[node],< / div >
< div class = "line" > < a name = "l00839" > < / a > < span class = "lineno" > 839< / span >   < span class = "keyword" > static_cast< < / span > < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > < span class = "keyword" > > < / span > (residual_arc_capacity_[arc]));< / div >
< div class = "line" > < a name = "l00840" > < / a > < span class = "lineno" > 840< / span >   FastPushFlow(< a class = "code" href = "resource_8cc.html#af12056bc2a8e3ec563f0940d87abbd2e" > delta< / a > , arc, node);< / div >
< div class = "line" > < a name = "l00841" > < / a > < span class = "lineno" > 841< / span >   < span class = "keywordflow" > if< / span > (IsActive(< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ) & & !head_active_before_push) {< / div >
< div class = "line" > < a name = "l00842" > < / a > < span class = "lineno" > 842< / span >   active_nodes_.push(< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > );< / div >
< div class = "line" > < a name = "l00843" > < / a > < span class = "lineno" > 843< / span >   }< / div >
< div class = "line" > < a name = "l00844" > < / a > < span class = "lineno" > 844< / span >   < span class = "keywordflow" > if< / span > (node_excess_[node] == 0) {< / div >
< div class = "line" > < a name = "l00845" > < / a > < span class = "lineno" > 845< / span >   < span class = "comment" > // arc may still be admissible.< / span > < / div >
< div class = "line" > < a name = "l00846" > < / a > < span class = "lineno" > 846< / span >   first_admissible_arc_.Set(node, arc);< / div >
< div class = "line" > < a name = "l00847" > < / a > < span class = "lineno" > 847< / span >   < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a name = "l00848" > < / a > < span class = "lineno" > 848< / span >   }< / div >
< div class = "line" > < a name = "l00849" > < / a > < span class = "lineno" > 849< / span >   }< / div >
< div class = "line" > < a name = "l00850" > < / a > < span class = "lineno" > 850< / span >   }< / div >
< div class = "line" > < a name = "l00851" > < / a > < span class = "lineno" > 851< / span >   Relabel(node);< / div >
< div class = "line" > < a name = "l00852" > < / a > < span class = "lineno" > 852< / span >   } < span class = "keywordflow" > while< / span > (status_ != INFEASIBLE);< / div >
< div class = "line" > < a name = "l00853" > < / a > < span class = "lineno" > 853< / span >   }< / div >
< div class = "line" > < a name = "l00854" > < / a > < span class = "lineno" > 854< / span >   < / div >
< div class = "line" > < a name = "l00855" > < / a > < span class = "lineno" > 855< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00856" > < / a > < span class = "lineno" > 856< / span >   < span class = "keywordtype" > bool< / span > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::LookAhead(< / div >
< div class = "line" > < a name = "l00857" > < / a > < span class = "lineno" > 857< / span >   < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > in_arc, < a class = "code" href = "namespaceoperations__research.html#aee97ac67f280d35acdef2c5d461a85c3" > CostValue< / a > in_tail_potential, < a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > node) {< / div >
< div class = "line" > < a name = "l00858" > < / a > < span class = "lineno" > 858< / span >   < a class = "code" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a name = "l00859" > < / a > < span class = "lineno" > 859< / span >   < a class = "code" href = "base_2logging_8h.html#ae89df3243bbb8341130c7b3f44145ea0" > DCHECK_EQ< / a > (Head(in_arc), node);< / div >
< div class = "line" > < a name = "l00860" > < / a > < span class = "lineno" > 860< / span >   < a class = "code" href = "base_2logging_8h.html#ae89df3243bbb8341130c7b3f44145ea0" > DCHECK_EQ< / a > (node_potential_[Tail(in_arc)], in_tail_potential);< / div >
< div class = "line" > < a name = "l00861" > < / a > < span class = "lineno" > 861< / span >   < span class = "keywordflow" > if< / span > (node_excess_[node] < 0) < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00862" > < / a > < span class = "lineno" > 862< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#aee97ac67f280d35acdef2c5d461a85c3" > CostValue< / a > tail_potential = node_potential_[node];< / div >
< div class = "line" > < a name = "l00863" > < / a > < span class = "lineno" > 863< / span >   < span class = "keywordflow" > for< / span > (OutgoingOrOppositeIncomingArcIterator it(*graph_, node,< / div >
< div class = "line" > < a name = "l00864" > < / a > < span class = "lineno" > 864< / span >   first_admissible_arc_[node]);< / div >
< div class = "line" > < a name = "l00865" > < / a > < span class = "lineno" > 865< / span >   it.Ok(); it.Next()) {< / div >
< div class = "line" > < a name = "l00866" > < / a > < span class = "lineno" > 866< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc = it.Index();< / div >
< div class = "line" > < a name = "l00867" > < / a > < span class = "lineno" > 867< / span >   < span class = "keywordflow" > if< / span > (FastIsAdmissible(arc, tail_potential)) {< / div >
< div class = "line" > < a name = "l00868" > < / a > < span class = "lineno" > 868< / span >   first_admissible_arc_.Set(node, arc);< / div >
< div class = "line" > < a name = "l00869" > < / a > < span class = "lineno" > 869< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00870" > < / a > < span class = "lineno" > 870< / span >   }< / div >
< div class = "line" > < a name = "l00871" > < / a > < span class = "lineno" > 871< / span >   }< / div >
< div class = "line" > < a name = "l00872" > < / a > < span class = "lineno" > 872< / span >   < / div >
< div class = "line" > < a name = "l00873" > < / a > < span class = "lineno" > 873< / span >   < span class = "comment" > // The node we looked ahead has no admissible arc at its current potential.< / span > < / div >
< div class = "line" > < a name = "l00874" > < / a > < span class = "lineno" > 874< / span >   < span class = "comment" > // We relabel it and return true if the original arc is still admissible.< / span > < / div >
< div class = "line" > < a name = "l00875" > < / a > < span class = "lineno" > 875< / span >   Relabel(node);< / div >
< div class = "line" > < a name = "l00876" > < / a > < span class = "lineno" > 876< / span >   < span class = "keywordflow" > return< / span > FastIsAdmissible(in_arc, in_tail_potential);< / div >
< div class = "line" > < a name = "l00877" > < / a > < span class = "lineno" > 877< / span >   }< / div >
< div class = "line" > < a name = "l00878" > < / a > < span class = "lineno" > 878< / span >   < / div >
< div class = "line" > < a name = "l00879" > < / a > < span class = "lineno" > 879< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00880" > < / a > < span class = "lineno" > 880< / span >   < span class = "keywordtype" > void< / span > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::Relabel(< / div >
< div class = "line" > < a name = "l00881" > < / a > < span class = "lineno" > 881< / span >   < a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > node) {< / div >
< div class = "line" > < a name = "l00882" > < / a > < span class = "lineno" > 882< / span >   < a class = "code" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a name = "l00883" > < / a > < span class = "lineno" > 883< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (CheckRelabelPrecondition(node));< / div >
< div class = "line" > < a name = "l00884" > < / a > < span class = "lineno" > 884< / span >   ++num_relabels_since_last_price_update_;< / div >
< div class = "line" > < a name = "l00885" > < / a > < span class = "lineno" > 885< / span >   < / div >
< div class = "line" > < a name = "l00886" > < / a > < span class = "lineno" > 886< / span >   < span class = "comment" > // By setting node_potential_[node] to the guaranteed_new_potential we are< / span > < / div >
< div class = "line" > < a name = "l00887" > < / a > < span class = "lineno" > 887< / span >   < span class = "comment" > // sure to keep epsilon-optimality of the pseudo-flow. Note that we could< / span > < / div >
< div class = "line" > < a name = "l00888" > < / a > < span class = "lineno" > 888< / span >   < span class = "comment" > // return right away with this value, but we prefer to check that this value< / span > < / div >
< div class = "line" > < a name = "l00889" > < / a > < span class = "lineno" > 889< / span >   < span class = "comment" > // will lead to at least one admissible arc, and if not, to decrease the< / span > < / div >
< div class = "line" > < a name = "l00890" > < / a > < span class = "lineno" > 890< / span >   < span class = "comment" > // potential as much as possible.< / span > < / div >
< div class = "line" > < a name = "l00891" > < / a > < span class = "lineno" > 891< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#aee97ac67f280d35acdef2c5d461a85c3" > CostValue< / a > guaranteed_new_potential = node_potential_[node] - epsilon_;< / div >
< div class = "line" > < a name = "l00892" > < / a > < span class = "lineno" > 892< / span >   < / div >
< div class = "line" > < a name = "l00893" > < / a > < span class = "lineno" > 893< / span >   < span class = "comment" > // This will be updated to contain the minimum node potential for which< / span > < / div >
< div class = "line" > < a name = "l00894" > < / a > < span class = "lineno" > 894< / span >   < span class = "comment" > // the node has no admissible arc. We know that:< / span > < / div >
< div class = "line" > < a name = "l00895" > < / a > < span class = "lineno" > 895< / span >   < span class = "comment" > // - min_non_admissible_potential < = node_potential_[node]< / span > < / div >
< div class = "line" > < a name = "l00896" > < / a > < span class = "lineno" > 896< / span >   < span class = "comment" > // - We can set the new node potential to min_non_admissible_potential -< / span > < / div >
< div class = "line" > < a name = "l00897" > < / a > < span class = "lineno" > 897< / span >   < span class = "comment" > // epsilon_ and still keep the epsilon-optimality of the pseudo flow.< / span > < / div >
< div class = "line" > < a name = "l00898" > < / a > < span class = "lineno" > 898< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#aee97ac67f280d35acdef2c5d461a85c3" > CostValue< / a > kMinCostValue = < a class = "code" href = "alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045" > std::numeric_limits< CostValue> ::min< / a > ();< / div >
< div class = "line" > < a name = "l00899" > < / a > < span class = "lineno" > 899< / span >   < a class = "code" href = "namespaceoperations__research.html#aee97ac67f280d35acdef2c5d461a85c3" > CostValue< / a > min_non_admissible_potential = kMinCostValue;< / div >
< div class = "line" > < a name = "l00900" > < / a > < span class = "lineno" > 900< / span >   < / div >
< div class = "line" > < a name = "l00901" > < / a > < span class = "lineno" > 901< / span >   < span class = "comment" > // The following variables help setting the first_admissible_arc_[node] to a< / span > < / div >
< div class = "line" > < a name = "l00902" > < / a > < span class = "lineno" > 902< / span >   < span class = "comment" > // value different from GetFirstOutgoingOrOppositeIncomingArc(node) which< / span > < / div >
< div class = "line" > < a name = "l00903" > < / a > < span class = "lineno" > 903< / span >   < span class = "comment" > // avoids looking again at some arcs.< / span > < / div >
< div class = "line" > < a name = "l00904" > < / a > < span class = "lineno" > 904< / span >   < a class = "code" href = "namespaceoperations__research.html#aee97ac67f280d35acdef2c5d461a85c3" > CostValue< / a > previous_min_non_admissible_potential = kMinCostValue;< / div >
< div class = "line" > < a name = "l00905" > < / a > < span class = "lineno" > 905< / span >   < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > first_arc = Graph::kNilArc;< / div >
< div class = "line" > < a name = "l00906" > < / a > < span class = "lineno" > 906< / span >   < / div >
< div class = "line" > < a name = "l00907" > < / a > < span class = "lineno" > 907< / span >   < span class = "keywordflow" > for< / span > (OutgoingOrOppositeIncomingArcIterator it(*graph_, node); it.Ok();< / div >
< div class = "line" > < a name = "l00908" > < / a > < span class = "lineno" > 908< / span >   it.Next()) {< / div >
< div class = "line" > < a name = "l00909" > < / a > < span class = "lineno" > 909< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc = it.Index();< / div >
< div class = "line" > < a name = "l00910" > < / a > < span class = "lineno" > 910< / span >   < span class = "keywordflow" > if< / span > (residual_arc_capacity_[arc] > 0) {< / div >
< div class = "line" > < a name = "l00911" > < / a > < span class = "lineno" > 911< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#aee97ac67f280d35acdef2c5d461a85c3" > CostValue< / a > min_non_admissible_potential_for_arc =< / div >
< div class = "line" > < a name = "l00912" > < / a > < span class = "lineno" > 912< / span >   node_potential_[Head(arc)] - scaled_arc_unit_cost_[arc];< / div >
< div class = "line" > < a name = "l00913" > < / a > < span class = "lineno" > 913< / span >   < span class = "keywordflow" > if< / span > (min_non_admissible_potential_for_arc > min_non_admissible_potential) {< / div >
< div class = "line" > < a name = "l00914" > < / a > < span class = "lineno" > 914< / span >   < span class = "keywordflow" > if< / span > (min_non_admissible_potential_for_arc > guaranteed_new_potential) {< / div >
< div class = "line" > < a name = "l00915" > < / a > < span class = "lineno" > 915< / span >   < span class = "comment" > // We found an admissible arc for the guaranteed_new_potential. We< / span > < / div >
< div class = "line" > < a name = "l00916" > < / a > < span class = "lineno" > 916< / span >   < span class = "comment" > // stop right now instead of trying to compute the minimum possible< / span > < / div >
< div class = "line" > < a name = "l00917" > < / a > < span class = "lineno" > 917< / span >   < span class = "comment" > // new potential that keeps the epsilon-optimality of the pseudo flow.< / span > < / div >
< div class = "line" > < a name = "l00918" > < / a > < span class = "lineno" > 918< / span >   node_potential_.Set(node, guaranteed_new_potential);< / div >
< div class = "line" > < a name = "l00919" > < / a > < span class = "lineno" > 919< / span >   first_admissible_arc_.Set(node, arc);< / div >
< div class = "line" > < a name = "l00920" > < / a > < span class = "lineno" > 920< / span >   < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a name = "l00921" > < / a > < span class = "lineno" > 921< / span >   }< / div >
< div class = "line" > < a name = "l00922" > < / a > < span class = "lineno" > 922< / span >   previous_min_non_admissible_potential = min_non_admissible_potential;< / div >
< div class = "line" > < a name = "l00923" > < / a > < span class = "lineno" > 923< / span >   min_non_admissible_potential = min_non_admissible_potential_for_arc;< / div >
< div class = "line" > < a name = "l00924" > < / a > < span class = "lineno" > 924< / span >   first_arc = arc;< / div >
< div class = "line" > < a name = "l00925" > < / a > < span class = "lineno" > 925< / span >   }< / div >
< div class = "line" > < a name = "l00926" > < / a > < span class = "lineno" > 926< / span >   }< / div >
< div class = "line" > < a name = "l00927" > < / a > < span class = "lineno" > 927< / span >   }< / div >
< div class = "line" > < a name = "l00928" > < / a > < span class = "lineno" > 928< / span >   < / div >
< div class = "line" > < a name = "l00929" > < / a > < span class = "lineno" > 929< / span >   < span class = "comment" > // No admissible arc leaves this node!< / span > < / div >
< div class = "line" > < a name = "l00930" > < / a > < span class = "lineno" > 930< / span >   < span class = "keywordflow" > if< / span > (min_non_admissible_potential == kMinCostValue) {< / div >
< div class = "line" > < a name = "l00931" > < / a > < span class = "lineno" > 931< / span >   < span class = "keywordflow" > if< / span > (node_excess_[node] != 0) {< / div >
< div class = "line" > < a name = "l00932" > < / a > < span class = "lineno" > 932< / span >   < span class = "comment" > // Note that this infeasibility detection is incomplete.< / span > < / div >
< div class = "line" > < a name = "l00933" > < / a > < span class = "lineno" > 933< / span >   < span class = "comment" > // Only max flow can detect that a min-cost flow problem is infeasible.< / span > < / div >
< div class = "line" > < a name = "l00934" > < / a > < span class = "lineno" > 934< / span >   status_ = < a class = "code" href = "namespaceoperations__research_1_1data_1_1vbp.html#a4604191fbd84a43686f44c25d7bd0161a2884fa43446c0cbc9c7a9b74d41d7483" > INFEASIBLE< / a > ;< / div >
< div class = "line" > < a name = "l00935" > < / a > < span class = "lineno" > 935< / span >   < a class = "code" href = "base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae" > LOG< / a > (< a class = "code" href = "log__severity_8h.html#ac9bcbe19995a8140cd4ec61773cd6e67" > ERROR< / a > ) < < < span class = "stringliteral" > " Infeasible problem." < / span > ;< / div >
< div class = "line" > < a name = "l00936" > < / a > < span class = "lineno" > 936< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00937" > < / a > < span class = "lineno" > 937< / span >   < span class = "comment" > // This source saturates all its arcs, we can actually decrease the< / span > < / div >
< div class = "line" > < a name = "l00938" > < / a > < span class = "lineno" > 938< / span >   < span class = "comment" > // potential by as much as we want.< / span > < / div >
< div class = "line" > < a name = "l00939" > < / a > < span class = "lineno" > 939< / span >   < span class = "comment" > // TODO(user): Set it to a minimum value, but be careful of overflow.< / span > < / div >
< div class = "line" > < a name = "l00940" > < / a > < span class = "lineno" > 940< / span >   node_potential_.Set(node, guaranteed_new_potential);< / div >
< div class = "line" > < a name = "l00941" > < / a > < span class = "lineno" > 941< / span >   first_admissible_arc_.Set(node,< / div >
< div class = "line" > < a name = "l00942" > < / a > < span class = "lineno" > 942< / span >   GetFirstOutgoingOrOppositeIncomingArc(node));< / div >
< div class = "line" > < a name = "l00943" > < / a > < span class = "lineno" > 943< / span >   }< / div >
< div class = "line" > < a name = "l00944" > < / a > < span class = "lineno" > 944< / span >   < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a name = "l00945" > < / a > < span class = "lineno" > 945< / span >   }< / div >
< div class = "line" > < a name = "l00946" > < / a > < span class = "lineno" > 946< / span >   < / div >
< div class = "line" > < a name = "l00947" > < / a > < span class = "lineno" > 947< / span >   < span class = "comment" > // We decrease the potential as much as possible, but we do not know the first< / span > < / div >
< div class = "line" > < a name = "l00948" > < / a > < span class = "lineno" > 948< / span >   < span class = "comment" > // admissible arc (most of the time). Keeping the< / span > < / div >
< div class = "line" > < a name = "l00949" > < / a > < span class = "lineno" > 949< / span >   < span class = "comment" > // previous_min_non_admissible_potential makes it faster by a few percent.< / span > < / div >
< div class = "line" > < a name = "l00950" > < / a > < span class = "lineno" > 950< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#aee97ac67f280d35acdef2c5d461a85c3" > CostValue< / a > new_potential = min_non_admissible_potential - epsilon_;< / div >
< div class = "line" > < a name = "l00951" > < / a > < span class = "lineno" > 951< / span >   node_potential_.Set(node, new_potential);< / div >
< div class = "line" > < a name = "l00952" > < / a > < span class = "lineno" > 952< / span >   < span class = "keywordflow" > if< / span > (previous_min_non_admissible_potential < = new_potential) {< / div >
< div class = "line" > < a name = "l00953" > < / a > < span class = "lineno" > 953< / span >   first_admissible_arc_.Set(node, first_arc);< / div >
< div class = "line" > < a name = "l00954" > < / a > < span class = "lineno" > 954< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00955" > < / a > < span class = "lineno" > 955< / span >   < span class = "comment" > // We have no indication of what may be the first admissible arc.< / span > < / div >
< div class = "line" > < a name = "l00956" > < / a > < span class = "lineno" > 956< / span >   first_admissible_arc_.Set(node,< / div >
< div class = "line" > < a name = "l00957" > < / a > < span class = "lineno" > 957< / span >   GetFirstOutgoingOrOppositeIncomingArc(node));< / div >
< div class = "line" > < a name = "l00958" > < / a > < span class = "lineno" > 958< / span >   }< / div >
< div class = "line" > < a name = "l00959" > < / a > < span class = "lineno" > 959< / span >   }< / div >
< div class = "line" > < a name = "l00960" > < / a > < span class = "lineno" > 960< / span >   < / div >
< div class = "line" > < a name = "l00961" > < / a > < span class = "lineno" > 961< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00962" > < / a > < span class = "lineno" > 962< / span >   < span class = "keyword" > typename< / span > < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > Graph::ArcIndex< / a > < / div >
< div class = "line" > < a name = "l00963" > < / a > < span class = "lineno" > 963< / span >   GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::Opposite(< / div >
< div class = "line" > < a name = "l00964" > < / a > < span class = "lineno" > 964< / span >   < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00965" > < / a > < span class = "lineno" > 965< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "structoperations__research_1_1_graphs.html#ae9cc106c6139c0b4e57057594bf56ea8" > Graphs< Graph> ::OppositeArc< / a > (*graph_, arc);< / div >
< div class = "line" > < a name = "l00966" > < / a > < span class = "lineno" > 966< / span >   }< / div >
< div class = "line" > < a name = "l00967" > < / a > < span class = "lineno" > 967< / span >   < / div >
< div class = "line" > < a name = "l00968" > < / a > < span class = "lineno" > 968< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00969" > < / a > < span class = "lineno" > 969< / span >   < span class = "keywordtype" > bool< / span > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::IsArcValid(< / div >
< div class = "line" > < a name = "l00970" > < / a > < span class = "lineno" > 970< / span >   < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00971" > < / a > < span class = "lineno" > 971< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "structoperations__research_1_1_graphs.html#ae02cd8602383e4fb48a8a933325db5fd" > Graphs< Graph> ::IsArcValid< / a > (*graph_, arc);< / div >
< div class = "line" > < a name = "l00972" > < / a > < span class = "lineno" > 972< / span >   }< / div >
< div class = "line" > < a name = "l00973" > < / a > < span class = "lineno" > 973< / span >   < / div >
< div class = "line" > < a name = "l00974" > < / a > < span class = "lineno" > 974< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph, < span class = "keyword" > typename< / span > ArcFlowType, < span class = "keyword" > typename< / span > ArcScaledCostType> < / div >
< div class = "line" > < a name = "l00975" > < / a > < span class = "lineno" > 975< / span >   < span class = "keywordtype" > bool< / span > GenericMinCostFlow< Graph, ArcFlowType, ArcScaledCostType> ::IsArcDirect(< / div >
< div class = "line" > < a name = "l00976" > < / a > < span class = "lineno" > 976< / span >   < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00977" > < / a > < span class = "lineno" > 977< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (IsArcValid(arc));< / div >
< div class = "line" > < a name = "l00978" > < / a > < span class = "lineno" > 978< / span >   < span class = "keywordflow" > return< / span > arc > = 0;< / div >
< div class = "line" > < a name = "l00979" > < / a > < span class = "lineno" > 979< / span >   }< / div >
< div class = "line" > < a name = "l00980" > < / a > < span class = "lineno" > 980< / span >   < / div >
< div class = "line" > < a name = "l00981" > < / a > < span class = "lineno" > 981< / span >   < span class = "comment" > // Explicit instantiations that can be used by a client.< / span > < / div >
< div class = "line" > < a name = "l00982" > < / a > < span class = "lineno" > 982< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00983" > < / a > < span class = "lineno" > 983< / span >   < span class = "comment" > // TODO(user): Move this code out of a .cc file and include it at the end of< / span > < / div >
< div class = "line" > < a name = "l00984" > < / a > < span class = "lineno" > 984< / span >   < span class = "comment" > // the header so it can work with any graph implementation?< / span > < / div >
< div class = "line" > < a name = "l00985" > < / a > < span class = "lineno" > 985< / span >   < span class = "keyword" > template< / span > < span class = "keyword" > class < / span > GenericMinCostFlow< StarGraph> ;< / div >
< div class = "line" > < a name = "l00986" > < / a > < span class = "lineno" > 986< / span >   < span class = "keyword" > template< / span > < span class = "keyword" > class < / span > GenericMinCostFlow< ::util::ReverseArcListGraph< > > ;< / div >
< div class = "line" > < a name = "l00987" > < / a > < span class = "lineno" > 987< / span >   < span class = "keyword" > template< / span > < span class = "keyword" > class < / span > GenericMinCostFlow< ::util::ReverseArcStaticGraph< > > ;< / div >
< div class = "line" > < a name = "l00988" > < / a > < span class = "lineno" > 988< / span >   < span class = "keyword" > template< / span > < span class = "keyword" > class < / span > GenericMinCostFlow< ::util::ReverseArcMixedGraph< > > ;< / div >
< div class = "line" > < a name = "l00989" > < / a > < span class = "lineno" > 989< / span >   < span class = "keyword" > template< / span > < span class = "keyword" > class < / span > GenericMinCostFlow< < / div >
< div class = "line" > < a name = "l00990" > < / a > < span class = "lineno" > 990< / span >   < a class = "code" href = "classutil_1_1_reverse_arc_static_graph.html" > ::util::ReverseArcStaticGraph< uint16_t, int32_t> < / a > > ;< / div >
< div class = "line" > < a name = "l00991" > < / a > < span class = "lineno" > 991< / span >   < / div >
< div class = "line" > < a name = "l00992" > < / a > < span class = "lineno" > 992< / span >   < span class = "comment" > // A more memory-efficient version for large graphs.< / span > < / div >
< div class = "line" > < a name = "l00993" > < / a > < span class = "lineno" > 993< / span >   < span class = "keyword" > template< / span > < span class = "keyword" > class < / span > GenericMinCostFlow< < / div >
< div class = "line" > < a name = "l00994" > < / a > < span class = "lineno" > 994< / span >   < a class = "code" href = "classutil_1_1_reverse_arc_static_graph.html" > ::util::ReverseArcStaticGraph< uint16_t, int32_t> < / a > ,< / div >
< div class = "line" > < a name = "l00995" > < / a > < span class = "lineno" > 995< / span >   < span class = "comment" > /*ArcFlowType=*/< / span > int16_t,< / div >
< div class = "line" > < a name = "l00996" > < / a > < span class = "lineno" > 996< / span >   < span class = "comment" > /*ArcScaledCostType=*/< / span > int32_t> ;< / div >
< div class = "line" > < a name = "l00997" > < / a > < span class = "lineno" > 997< / span >   < / div >
< div class = "line" > < a name = "l00998" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_simple_min_cost_flow.html#a6d65a7ab08c98b332781f187776683e5" > 998< / a > < / span >   < a class = "code" href = "classoperations__research_1_1_simple_min_cost_flow.html#a6d65a7ab08c98b332781f187776683e5" > SimpleMinCostFlow::SimpleMinCostFlow< / a > (< a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > reserve_num_nodes,< / div >
< div class = "line" > < a name = "l00999" > < / a > < span class = "lineno" > 999< / span >   < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > reserve_num_arcs) {< / div >
< div class = "line" > < a name = "l01000" > < / a > < span class = "lineno" > 1000< / span >   < span class = "keywordflow" > if< / span > (reserve_num_nodes > 0) {< / div >
< div class = "line" > < a name = "l01001" > < / a > < span class = "lineno" > 1001< / span >   node_supply_.reserve(reserve_num_nodes);< / div >
< div class = "line" > < a name = "l01002" > < / a > < span class = "lineno" > 1002< / span >   }< / div >
< div class = "line" > < a name = "l01003" > < / a > < span class = "lineno" > 1003< / span >   < span class = "keywordflow" > if< / span > (reserve_num_arcs > 0) {< / div >
< div class = "line" > < a name = "l01004" > < / a > < span class = "lineno" > 1004< / span >   arc_tail_.reserve(reserve_num_arcs);< / div >
< div class = "line" > < a name = "l01005" > < / a > < span class = "lineno" > 1005< / span >   arc_head_.reserve(reserve_num_arcs);< / div >
< div class = "line" > < a name = "l01006" > < / a > < span class = "lineno" > 1006< / span >   arc_capacity_.reserve(reserve_num_arcs);< / div >
< div class = "line" > < a name = "l01007" > < / a > < span class = "lineno" > 1007< / span >   arc_cost_.reserve(reserve_num_arcs);< / div >
< div class = "line" > < a name = "l01008" > < / a > < span class = "lineno" > 1008< / span >   arc_permutation_.reserve(reserve_num_arcs);< / div >
< div class = "line" > < a name = "l01009" > < / a > < span class = "lineno" > 1009< / span >   arc_flow_.reserve(reserve_num_arcs);< / div >
< div class = "line" > < a name = "l01010" > < / a > < span class = "lineno" > 1010< / span >   }< / div >
< div class = "line" > < a name = "l01011" > < / a > < span class = "lineno" > 1011< / span >   }< / div >
< div class = "line" > < a name = "l01012" > < / a > < span class = "lineno" > 1012< / span >   < / div >
< div class = "line" > < a name = "l01013" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_simple_min_cost_flow.html#a7cd2dc0776a9f339b56ffac996a7df8c" > 1013< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "classoperations__research_1_1_simple_min_cost_flow.html#a7cd2dc0776a9f339b56ffac996a7df8c" > SimpleMinCostFlow::SetNodeSupply< / a > (< a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > node, < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > supply) {< / div >
< div class = "line" > < a name = "l01014" > < / a > < span class = "lineno" > 1014< / span >   ResizeNodeVectors(node);< / div >
< div class = "line" > < a name = "l01015" > < / a > < span class = "lineno" > 1015< / span >   node_supply_[node] = supply;< / div >
< div class = "line" > < a name = "l01016" > < / a > < span class = "lineno" > 1016< / span >   }< / div >
< div class = "line" > < a name = "l01017" > < / a > < span class = "lineno" > 1017< / span >   < / div >
< div class = "line" > < a name = "l01018" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_simple_min_cost_flow.html#a20e10ea36c32c30c5130f300f1ffde2e" > 1018< / a > < / span >   < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > < a class = "code" href = "classoperations__research_1_1_simple_min_cost_flow.html#a20e10ea36c32c30c5130f300f1ffde2e" > SimpleMinCostFlow::AddArcWithCapacityAndUnitCost< / a > (< a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > < a class = "code" href = "routing__flow_8cc.html#a64e7efc5529154ba56903e75f5300990" > tail< / a > ,< / div >
< div class = "line" > < a name = "l01019" > < / a > < span class = "lineno" > 1019< / span >   < a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > < a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ,< / div >
< div class = "line" > < a name = "l01020" > < / a > < span class = "lineno" > 1020< / span >   < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > < a class = "code" href = "routing__flow_8cc.html#a2acb49f4df5288066c43610bede123ec" > capacity< / a > ,< / div >
< div class = "line" > < a name = "l01021" > < / a > < span class = "lineno" > 1021< / span >   < a class = "code" href = "namespaceoperations__research.html#aee97ac67f280d35acdef2c5d461a85c3" > CostValue< / a > unit_cost) {< / div >
< div class = "line" > < a name = "l01022" > < / a > < span class = "lineno" > 1022< / span >   ResizeNodeVectors(< a class = "code" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > (< a class = "code" href = "routing__flow_8cc.html#a64e7efc5529154ba56903e75f5300990" > tail< / a > , < a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ));< / div >
< div class = "line" > < a name = "l01023" > < / a > < span class = "lineno" > 1023< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc = arc_tail_.size();< / div >
< div class = "line" > < a name = "l01024" > < / a > < span class = "lineno" > 1024< / span >   arc_tail_.push_back(< a class = "code" href = "routing__flow_8cc.html#a64e7efc5529154ba56903e75f5300990" > tail< / a > );< / div >
< div class = "line" > < a name = "l01025" > < / a > < span class = "lineno" > 1025< / span >   arc_head_.push_back(< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > );< / div >
< div class = "line" > < a name = "l01026" > < / a > < span class = "lineno" > 1026< / span >   arc_capacity_.push_back(< a class = "code" href = "routing__flow_8cc.html#a2acb49f4df5288066c43610bede123ec" > capacity< / a > );< / div >
< div class = "line" > < a name = "l01027" > < / a > < span class = "lineno" > 1027< / span >   arc_cost_.push_back(unit_cost);< / div >
< div class = "line" > < a name = "l01028" > < / a > < span class = "lineno" > 1028< / span >   < span class = "keywordflow" > return< / span > arc;< / div >
< div class = "line" > < a name = "l01029" > < / a > < span class = "lineno" > 1029< / span >   }< / div >
< div class = "line" > < a name = "l01030" > < / a > < span class = "lineno" > 1030< / span >   < / div >
< div class = "line" > < a name = "l01031" > < / a > < span class = "lineno" > 1031< / span >   < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > SimpleMinCostFlow::PermutedArc(< a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc) {< / div >
< div class = "line" > < a name = "l01032" > < / a > < span class = "lineno" > 1032< / span >   < span class = "keywordflow" > return< / span > arc < arc_permutation_.size() ? arc_permutation_[arc] : arc;< / div >
< div class = "line" > < a name = "l01033" > < / a > < span class = "lineno" > 1033< / span >   }< / div >
< div class = "line" > < a name = "l01034" > < / a > < span class = "lineno" > 1034< / span >   < / div >
< div class = "line" > < a name = "l01035" > < / a > < span class = "lineno" > 1035< / span >   < a class = "code" href = "classoperations__research_1_1_min_cost_flow_base.html#a67a0db04d321a74b7e7fcfd3f1a3f70b" > SimpleMinCostFlow::Status< / a > SimpleMinCostFlow::SolveWithPossibleAdjustment(< / div >
< div class = "line" > < a name = "l01036" > < / a > < span class = "lineno" > 1036< / span >   SupplyAdjustment adjustment) {< / div >
< div class = "line" > < a name = "l01037" > < / a > < span class = "lineno" > 1037< / span >   optimal_cost_ = 0;< / div >
< div class = "line" > < a name = "l01038" > < / a > < span class = "lineno" > 1038< / span >   maximum_flow_ = 0;< / div >
< div class = "line" > < a name = "l01039" > < / a > < span class = "lineno" > 1039< / span >   arc_flow_.clear();< / div >
< div class = "line" > < a name = "l01040" > < / a > < span class = "lineno" > 1040< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > num_nodes = node_supply_.size();< / div >
< div class = "line" > < a name = "l01041" > < / a > < span class = "lineno" > 1041< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > num_arcs = arc_capacity_.size();< / div >
< div class = "line" > < a name = "l01042" > < / a > < span class = "lineno" > 1042< / span >   < span class = "keywordflow" > if< / span > (num_nodes == 0) < span class = "keywordflow" > return< / span > < a class = "code" href = "classoperations__research_1_1_min_cost_flow_base.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba2579881e7c83261bc21bafb5a5c92cad" > OPTIMAL< / a > ;< / div >
< div class = "line" > < a name = "l01043" > < / a > < span class = "lineno" > 1043< / span >   < / div >
< div class = "line" > < a name = "l01044" > < / a > < span class = "lineno" > 1044< / span >   < span class = "keywordtype" > int< / span > supply_node_count = 0, demand_node_count = 0;< / div >
< div class = "line" > < a name = "l01045" > < / a > < span class = "lineno" > 1045< / span >   < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > total_supply = 0, total_demand = 0;< / div >
< div class = "line" > < a name = "l01046" > < / a > < span class = "lineno" > 1046< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > node = 0; node < num_nodes; ++node) {< / div >
< div class = "line" > < a name = "l01047" > < / a > < span class = "lineno" > 1047< / span >   < span class = "keywordflow" > if< / span > (node_supply_[node] > 0) {< / div >
< div class = "line" > < a name = "l01048" > < / a > < span class = "lineno" > 1048< / span >   ++supply_node_count;< / div >
< div class = "line" > < a name = "l01049" > < / a > < span class = "lineno" > 1049< / span >   total_supply += node_supply_[node];< / div >
< div class = "line" > < a name = "l01050" > < / a > < span class = "lineno" > 1050< / span >   } < span class = "keywordflow" > else< / span > < span class = "keywordflow" > if< / span > (node_supply_[node] < 0) {< / div >
< div class = "line" > < a name = "l01051" > < / a > < span class = "lineno" > 1051< / span >   ++demand_node_count;< / div >
< div class = "line" > < a name = "l01052" > < / a > < span class = "lineno" > 1052< / span >   total_demand -= node_supply_[node];< / div >
< div class = "line" > < a name = "l01053" > < / a > < span class = "lineno" > 1053< / span >   }< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l01054" > < / a > < span class = "lineno" > 1054< / span >   }< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l01055" > < / a > < span class = "lineno" > 1055< / span >   < span class = "keywordflow" > if< / span > (adjustment == DONT_ADJUST & & total_supply != total_demand) {< / div >
< div class = "line" > < a name = "l01056" > < / a > < span class = "lineno" > 1056< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "classoperations__research_1_1_min_cost_flow_base.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba6a2175a75814f119266396a0e9681718" > UNBALANCED< / a > ;< / div >
< div class = "line" > < a name = "l01057" > < / a > < span class = "lineno" > 1057< / span >   }< / div >
< div class = "line" > < a name = "l01058" > < / a > < span class = "lineno" > 1058< / span >   < / div >
< div class = "line" > < a name = "l01059" > < / a > < span class = "lineno" > 1059< / span >   < span class = "comment" > // Feasibility checking, and possible supply/demand adjustment, is done by:< / span > < / div >
< div class = "line" > < a name = "l01060" > < / a > < span class = "lineno" > 1060< / span >   < span class = "comment" > // 1. Creating a new source and sink node.< / span > < / div >
< div class = "line" > < a name = "l01061" > < / a > < span class = "lineno" > 1061< / span >   < span class = "comment" > // 2. Taking all nodes that have a non-zero supply or demand and< / span > < / div >
< div class = "line" > < a name = "l01062" > < / a > < span class = "lineno" > 1062< / span >   < span class = "comment" > // connecting them to the source or sink respectively. The arc thus< / span > < / div >
< div class = "line" > < a name = "l01063" > < / a > < span class = "lineno" > 1063< / span >   < span class = "comment" > // added has a capacity of the supply or demand.< / span > < / div >
< div class = "line" > < a name = "l01064" > < / a > < span class = "lineno" > 1064< / span >   < span class = "comment" > // 3. Computing the max flow between the new source and sink.< / span > < / div >
< div class = "line" > < a name = "l01065" > < / a > < span class = "lineno" > 1065< / span >   < span class = "comment" > // 4. If adjustment isn' t being done, checking that the max flow is equal< / span > < / div >
< div class = "line" > < a name = "l01066" > < / a > < span class = "lineno" > 1066< / span >   < span class = "comment" > // to the total supply/demand (and returning INFEASIBLE if it isn' t).< / span > < / div >
< div class = "line" > < a name = "l01067" > < / a > < span class = "lineno" > 1067< / span >   < span class = "comment" > // 5. Running min-cost max-flow on this augmented graph, using the max< / span > < / div >
< div class = "line" > < a name = "l01068" > < / a > < span class = "lineno" > 1068< / span >   < span class = "comment" > // flow computed in step 3 as the supply of the source and demand of< / span > < / div >
< div class = "line" > < a name = "l01069" > < / a > < span class = "lineno" > 1069< / span >   < span class = "comment" > // the sink.< / span > < / div >
< div class = "line" > < a name = "l01070" > < / a > < span class = "lineno" > 1070< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > augmented_num_arcs =< / div >
< div class = "line" > < a name = "l01071" > < / a > < span class = "lineno" > 1071< / span >   num_arcs + supply_node_count + demand_node_count;< / div >
< div class = "line" > < a name = "l01072" > < / a > < span class = "lineno" > 1072< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > source = num_nodes;< / div >
< div class = "line" > < a name = "l01073" > < / a > < span class = "lineno" > 1073< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > sink = num_nodes + 1;< / div >
< div class = "line" > < a name = "l01074" > < / a > < span class = "lineno" > 1074< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > augmented_num_nodes = num_nodes + 2;< / div >
< div class = "line" > < a name = "l01075" > < / a > < span class = "lineno" > 1075< / span >   < / div >
< div class = "line" > < a name = "l01076" > < / a > < span class = "lineno" > 1076< / span >   < a class = "code" href = "namespaceutil.html#a2f76166dbe0c4055a1f256235ad00478" > Graph< / a > graph(augmented_num_nodes, augmented_num_arcs);< / div >
< div class = "line" > < a name = "l01077" > < / a > < span class = "lineno" > 1077< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc = 0; arc < num_arcs; ++arc) {< / div >
< div class = "line" > < a name = "l01078" > < / a > < span class = "lineno" > 1078< / span >   graph.AddArc(arc_tail_[arc], arc_head_[arc]);< / div >
< div class = "line" > < a name = "l01079" > < / a > < span class = "lineno" > 1079< / span >   }< / div >
< div class = "line" > < a name = "l01080" > < / a > < span class = "lineno" > 1080< / span >   < / div >
< div class = "line" > < a name = "l01081" > < / a > < span class = "lineno" > 1081< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > node = 0; node < num_nodes; ++node) {< / div >
< div class = "line" > < a name = "l01082" > < / a > < span class = "lineno" > 1082< / span >   < span class = "keywordflow" > if< / span > (node_supply_[node] > 0) {< / div >
< div class = "line" > < a name = "l01083" > < / a > < span class = "lineno" > 1083< / span >   graph.AddArc(source, node);< / div >
< div class = "line" > < a name = "l01084" > < / a > < span class = "lineno" > 1084< / span >   } < span class = "keywordflow" > else< / span > < span class = "keywordflow" > if< / span > (node_supply_[node] < 0) {< / div >
< div class = "line" > < a name = "l01085" > < / a > < span class = "lineno" > 1085< / span >   graph.AddArc(node, sink);< / div >
< div class = "line" > < a name = "l01086" > < / a > < span class = "lineno" > 1086< / span >   }< / div >
< div class = "line" > < a name = "l01087" > < / a > < span class = "lineno" > 1087< / span >   }< / div >
< div class = "line" > < a name = "l01088" > < / a > < span class = "lineno" > 1088< / span >   < / div >
< div class = "line" > < a name = "l01089" > < / a > < span class = "lineno" > 1089< / span >   graph.Build(& arc_permutation_);< / div >
< div class = "line" > < a name = "l01090" > < / a > < span class = "lineno" > 1090< / span >   < / div >
< div class = "line" > < a name = "l01091" > < / a > < span class = "lineno" > 1091< / span >   {< / div >
< div class = "line" > < a name = "l01092" > < / a > < span class = "lineno" > 1092< / span >   GenericMaxFlow< Graph> max_flow(& graph, source, sink);< / div >
< div class = "line" > < a name = "l01093" > < / a > < span class = "lineno" > 1093< / span >   < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc;< / div >
< div class = "line" > < a name = "l01094" > < / a > < span class = "lineno" > 1094< / span >   < span class = "keywordflow" > for< / span > (arc = 0; arc < num_arcs; ++arc) {< / div >
< div class = "line" > < a name = "l01095" > < / a > < span class = "lineno" > 1095< / span >   max_flow.SetArcCapacity(PermutedArc(arc), arc_capacity_[arc]);< / div >
< div class = "line" > < a name = "l01096" > < / a > < span class = "lineno" > 1096< / span >   }< / div >
< div class = "line" > < a name = "l01097" > < / a > < span class = "lineno" > 1097< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > node = 0; node < num_nodes; ++node) {< / div >
< div class = "line" > < a name = "l01098" > < / a > < span class = "lineno" > 1098< / span >   < span class = "keywordflow" > if< / span > (node_supply_[node] != 0) {< / div >
< div class = "line" > < a name = "l01099" > < / a > < span class = "lineno" > 1099< / span >   max_flow.SetArcCapacity(PermutedArc(arc), std::abs(node_supply_[node]));< / div >
< div class = "line" > < a name = "l01100" > < / a > < span class = "lineno" > 1100< / span >   ++arc;< / div >
< div class = "line" > < a name = "l01101" > < / a > < span class = "lineno" > 1101< / span >   }< / div >
< div class = "line" > < a name = "l01102" > < / a > < span class = "lineno" > 1102< / span >   }< / div >
< div class = "line" > < a name = "l01103" > < / a > < span class = "lineno" > 1103< / span >   < a class = "code" href = "base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b" > CHECK_EQ< / a > (arc, augmented_num_arcs);< / div >
< div class = "line" > < a name = "l01104" > < / a > < span class = "lineno" > 1104< / span >   < span class = "keywordflow" > if< / span > (!max_flow.Solve()) {< / div >
< div class = "line" > < a name = "l01105" > < / a > < span class = "lineno" > 1105< / span >   < a class = "code" href = "base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae" > LOG< / a > (< a class = "code" href = "log__severity_8h.html#ac9bcbe19995a8140cd4ec61773cd6e67" > ERROR< / a > ) < < < span class = "stringliteral" > " Max flow could not be computed." < / span > ;< / div >
< div class = "line" > < a name = "l01106" > < / a > < span class = "lineno" > 1106< / span >   < span class = "keywordflow" > switch< / span > (max_flow.status()) {< / div >
< div class = "line" > < a name = "l01107" > < / a > < span class = "lineno" > 1107< / span >   < span class = "keywordflow" > case< / span > < a class = "code" href = "classoperations__research_1_1_max_flow_status_class.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba0e6873a155f86a4695f463bf8601d05f" > MaxFlowStatusClass::NOT_SOLVED< / a > :< / div >
< div class = "line" > < a name = "l01108" > < / a > < span class = "lineno" > 1108< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "classoperations__research_1_1_min_cost_flow_base.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba0e6873a155f86a4695f463bf8601d05f" > NOT_SOLVED< / a > ;< / div >
< div class = "line" > < a name = "l01109" > < / a > < span class = "lineno" > 1109< / span >   < span class = "keywordflow" > case< / span > < a class = "code" href = "classoperations__research_1_1_max_flow_status_class.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba2579881e7c83261bc21bafb5a5c92cad" > MaxFlowStatusClass::OPTIMAL< / a > :< / div >
< div class = "line" > < a name = "l01110" > < / a > < span class = "lineno" > 1110< / span >   < a class = "code" href = "base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae" > LOG< / a > (< a class = "code" href = "log__severity_8h.html#ac9bcbe19995a8140cd4ec61773cd6e67" > ERROR< / a > )< / div >
< div class = "line" > < a name = "l01111" > < / a > < span class = "lineno" > 1111< / span >   < < < span class = "stringliteral" > " Max flow failed but claimed to have an optimal solution" < / span > ;< / div >
< div class = "line" > < a name = "l01112" > < / a > < span class = "lineno" > 1112< / span >   ABSL_FALLTHROUGH_INTENDED;< / div >
< div class = "line" > < a name = "l01113" > < / a > < span class = "lineno" > 1113< / span >   < span class = "keywordflow" > default< / span > :< / div >
< div class = "line" > < a name = "l01114" > < / a > < span class = "lineno" > 1114< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "classoperations__research_1_1_min_cost_flow_base.html#a67a0db04d321a74b7e7fcfd3f1a3f70bac76ecfd837bdc6d4150bb02c403356e4" > BAD_RESULT< / a > ;< / div >
< div class = "line" > < a name = "l01115" > < / a > < span class = "lineno" > 1115< / span >   }< / div >
< div class = "line" > < a name = "l01116" > < / a > < span class = "lineno" > 1116< / span >   }< / div >
< div class = "line" > < a name = "l01117" > < / a > < span class = "lineno" > 1117< / span >   maximum_flow_ = max_flow.GetOptimalFlow();< / div >
< div class = "line" > < a name = "l01118" > < / a > < span class = "lineno" > 1118< / span >   }< / div >
< div class = "line" > < a name = "l01119" > < / a > < span class = "lineno" > 1119< / span >   < / div >
< div class = "line" > < a name = "l01120" > < / a > < span class = "lineno" > 1120< / span >   < span class = "keywordflow" > if< / span > (adjustment == DONT_ADJUST & & maximum_flow_ != total_supply) {< / div >
< div class = "line" > < a name = "l01121" > < / a > < span class = "lineno" > 1121< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "classoperations__research_1_1_min_cost_flow_base.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba2884fa43446c0cbc9c7a9b74d41d7483" > INFEASIBLE< / a > ;< / div >
< div class = "line" > < a name = "l01122" > < / a > < span class = "lineno" > 1122< / span >   }< / div >
< div class = "line" > < a name = "l01123" > < / a > < span class = "lineno" > 1123< / span >   < / div >
< div class = "line" > < a name = "l01124" > < / a > < span class = "lineno" > 1124< / span >   GenericMinCostFlow< Graph> min_cost_flow(& graph);< / div >
< div class = "line" > < a name = "l01125" > < / a > < span class = "lineno" > 1125< / span >   < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc;< / div >
< div class = "line" > < a name = "l01126" > < / a > < span class = "lineno" > 1126< / span >   < span class = "keywordflow" > for< / span > (arc = 0; arc < num_arcs; ++arc) {< / div >
< div class = "line" > < a name = "l01127" > < / a > < span class = "lineno" > 1127< / span >   < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > permuted_arc = PermutedArc(arc);< / div >
< div class = "line" > < a name = "l01128" > < / a > < span class = "lineno" > 1128< / span >   min_cost_flow.SetArcUnitCost(permuted_arc, arc_cost_[arc]);< / div >
< div class = "line" > < a name = "l01129" > < / a > < span class = "lineno" > 1129< / span >   min_cost_flow.SetArcCapacity(permuted_arc, arc_capacity_[arc]);< / div >
< div class = "line" > < a name = "l01130" > < / a > < span class = "lineno" > 1130< / span >   }< / div >
< div class = "line" > < a name = "l01131" > < / a > < span class = "lineno" > 1131< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > node = 0; node < num_nodes; ++node) {< / div >
< div class = "line" > < a name = "l01132" > < / a > < span class = "lineno" > 1132< / span >   < span class = "keywordflow" > if< / span > (node_supply_[node] != 0) {< / div >
< div class = "line" > < a name = "l01133" > < / a > < span class = "lineno" > 1133< / span >   < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > permuted_arc = PermutedArc(arc);< / div >
< div class = "line" > < a name = "l01134" > < / a > < span class = "lineno" > 1134< / span >   min_cost_flow.SetArcCapacity(permuted_arc, std::abs(node_supply_[node]));< / div >
< div class = "line" > < a name = "l01135" > < / a > < span class = "lineno" > 1135< / span >   min_cost_flow.SetArcUnitCost(permuted_arc, 0);< / div >
< div class = "line" > < a name = "l01136" > < / a > < span class = "lineno" > 1136< / span >   ++arc;< / div >
< div class = "line" > < a name = "l01137" > < / a > < span class = "lineno" > 1137< / span >   }< / div >
< div class = "line" > < a name = "l01138" > < / a > < span class = "lineno" > 1138< / span >   }< / div >
< div class = "line" > < a name = "l01139" > < / a > < span class = "lineno" > 1139< / span >   min_cost_flow.SetNodeSupply(source, maximum_flow_);< / div >
< div class = "line" > < a name = "l01140" > < / a > < span class = "lineno" > 1140< / span >   min_cost_flow.SetNodeSupply(sink, -maximum_flow_);< / div >
< div class = "line" > < a name = "l01141" > < / a > < span class = "lineno" > 1141< / span >   min_cost_flow.SetCheckFeasibility(< span class = "keyword" > false< / span > );< / div >
< div class = "line" > < a name = "l01142" > < / a > < span class = "lineno" > 1142< / span >   < / div >
< div class = "line" > < a name = "l01143" > < / a > < span class = "lineno" > 1143< / span >   arc_flow_.resize(num_arcs);< / div >
< div class = "line" > < a name = "l01144" > < / a > < span class = "lineno" > 1144< / span >   < span class = "keywordflow" > if< / span > (min_cost_flow.Solve()) {< / div >
< div class = "line" > < a name = "l01145" > < / a > < span class = "lineno" > 1145< / span >   optimal_cost_ = min_cost_flow.GetOptimalCost();< / div >
< div class = "line" > < a name = "l01146" > < / a > < span class = "lineno" > 1146< / span >   < span class = "keywordflow" > for< / span > (arc = 0; arc < num_arcs; ++arc) {< / div >
< div class = "line" > < a name = "l01147" > < / a > < span class = "lineno" > 1147< / span >   arc_flow_[arc] = min_cost_flow.Flow(PermutedArc(arc));< / div >
< div class = "line" > < a name = "l01148" > < / a > < span class = "lineno" > 1148< / span >   }< / div >
< div class = "line" > < a name = "l01149" > < / a > < span class = "lineno" > 1149< / span >   }< / div >
< div class = "line" > < a name = "l01150" > < / a > < span class = "lineno" > 1150< / span >   < span class = "keywordflow" > return< / span > min_cost_flow.status();< / div >
< div class = "line" > < a name = "l01151" > < / a > < span class = "lineno" > 1151< / span >   }< / div >
< div class = "line" > < a name = "l01152" > < / a > < span class = "lineno" > 1152< / span >   < / div >
< div class = "line" > < a name = "l01153" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_simple_min_cost_flow.html#ad39ce7ee10c34a3ce1f69f179aa4f1e9" > 1153< / a > < / span >   < a class = "code" href = "namespaceoperations__research.html#aee97ac67f280d35acdef2c5d461a85c3" > CostValue< / a > < a class = "code" href = "classoperations__research_1_1_simple_min_cost_flow.html#ad39ce7ee10c34a3ce1f69f179aa4f1e9" > SimpleMinCostFlow::OptimalCost< / a > ()< span class = "keyword" > const < / span > { < span class = "keywordflow" > return< / span > optimal_cost_; }< / div >
< div class = "line" > < a name = "l01154" > < / a > < span class = "lineno" > 1154< / span >   < / div >
< div class = "line" > < a name = "l01155" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_simple_min_cost_flow.html#a3351fc1eb1dce4a7f6b937db874b5de1" > 1155< / a > < / span >   < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > < a class = "code" href = "classoperations__research_1_1_simple_min_cost_flow.html#a3351fc1eb1dce4a7f6b937db874b5de1" > SimpleMinCostFlow::MaximumFlow< / a > ()< span class = "keyword" > const < / span > { < span class = "keywordflow" > return< / span > maximum_flow_; }< / div >
< div class = "line" > < a name = "l01156" > < / a > < span class = "lineno" > 1156< / span >   < / div >
< div class = "line" > < a name = "l01157" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_simple_min_cost_flow.html#a2a420ad8221c326064736ccf148d2f93" > 1157< / a > < / span >   < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > < a class = "code" href = "classoperations__research_1_1_simple_min_cost_flow.html#a2a420ad8221c326064736ccf148d2f93" > SimpleMinCostFlow::Flow< / a > (< a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l01158" > < / a > < span class = "lineno" > 1158< / span >   < span class = "keywordflow" > return< / span > arc_flow_[arc];< / div >
< div class = "line" > < a name = "l01159" > < / a > < span class = "lineno" > 1159< / span >   }< / div >
< div class = "line" > < a name = "l01160" > < / a > < span class = "lineno" > 1160< / span >   < / div >
< div class = "line" > < a name = "l01161" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_simple_min_cost_flow.html#a3be0f6fcc44bc6a4a1e976c1e60b31d0" > 1161< / a > < / span >   < a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > < a class = "code" href = "classoperations__research_1_1_simple_min_cost_flow.html#a3be0f6fcc44bc6a4a1e976c1e60b31d0" > SimpleMinCostFlow::NumNodes< / a > ()< span class = "keyword" > const < / span > { < span class = "keywordflow" > return< / span > node_supply_.size(); }< / div >
< div class = "line" > < a name = "l01162" > < / a > < span class = "lineno" > 1162< / span >   < / div >
< div class = "line" > < a name = "l01163" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_simple_min_cost_flow.html#a7898be8b7efbfe53a58fcf621cf41315" > 1163< / a > < / span >   < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > < a class = "code" href = "classoperations__research_1_1_simple_min_cost_flow.html#a7898be8b7efbfe53a58fcf621cf41315" > SimpleMinCostFlow::NumArcs< / a > ()< span class = "keyword" > const < / span > { < span class = "keywordflow" > return< / span > arc_tail_.size(); }< / div >
< div class = "line" > < a name = "l01164" > < / a > < span class = "lineno" > 1164< / span >   < / div >
< div class = "line" > < a name = "l01165" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_simple_min_cost_flow.html#a8f17f2cebe15f0a8f2b072738093379d" > 1165< / a > < / span >   < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > < a class = "code" href = "classoperations__research_1_1_simple_min_cost_flow.html#a8f17f2cebe15f0a8f2b072738093379d" > SimpleMinCostFlow::Tail< / a > (< a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc)< span class = "keyword" > const < / span > { < span class = "keywordflow" > return< / span > arc_tail_[arc]; }< / div >
< div class = "line" > < a name = "l01166" > < / a > < span class = "lineno" > 1166< / span >   < / div >
< div class = "line" > < a name = "l01167" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_simple_min_cost_flow.html#acf6f87e72f7535b5dfe004740ef52a1d" > 1167< / a > < / span >   < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > < a class = "code" href = "classoperations__research_1_1_simple_min_cost_flow.html#acf6f87e72f7535b5dfe004740ef52a1d" > SimpleMinCostFlow::Head< / a > (< a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc)< span class = "keyword" > const < / span > { < span class = "keywordflow" > return< / span > arc_head_[arc]; }< / div >
< div class = "line" > < a name = "l01168" > < / a > < span class = "lineno" > 1168< / span >   < / div >
< div class = "line" > < a name = "l01169" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_simple_min_cost_flow.html#a9dcd8610149406a1593d2a0725290482" > 1169< / a > < / span >   < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > < a class = "code" href = "classoperations__research_1_1_simple_min_cost_flow.html#a9dcd8610149406a1593d2a0725290482" > SimpleMinCostFlow::Capacity< / a > (< a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l01170" > < / a > < span class = "lineno" > 1170< / span >   < span class = "keywordflow" > return< / span > arc_capacity_[arc];< / div >
< div class = "line" > < a name = "l01171" > < / a > < span class = "lineno" > 1171< / span >   }< / div >
< div class = "line" > < a name = "l01172" > < / a > < span class = "lineno" > 1172< / span >   < / div >
< div class = "line" > < a name = "l01173" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_simple_min_cost_flow.html#a1057f1a98821c9237d75967b575f3829" > 1173< / a > < / span >   < a class = "code" href = "namespaceoperations__research.html#aee97ac67f280d35acdef2c5d461a85c3" > CostValue< / a > < a class = "code" href = "classoperations__research_1_1_simple_min_cost_flow.html#a1057f1a98821c9237d75967b575f3829" > SimpleMinCostFlow::UnitCost< / a > (< a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l01174" > < / a > < span class = "lineno" > 1174< / span >   < span class = "keywordflow" > return< / span > arc_cost_[arc];< / div >
< div class = "line" > < a name = "l01175" > < / a > < span class = "lineno" > 1175< / span >   }< / div >
< div class = "line" > < a name = "l01176" > < / a > < span class = "lineno" > 1176< / span >   < / div >
< div class = "line" > < a name = "l01177" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_simple_min_cost_flow.html#aafd4139404e4f42af650481c3ff10cc7" > 1177< / a > < / span >   < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > < a class = "code" href = "classoperations__research_1_1_simple_min_cost_flow.html#aafd4139404e4f42af650481c3ff10cc7" > SimpleMinCostFlow::Supply< / a > (< a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > node)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l01178" > < / a > < span class = "lineno" > 1178< / span >   < span class = "keywordflow" > return< / span > node_supply_[node];< / div >
< div class = "line" > < a name = "l01179" > < / a > < span class = "lineno" > 1179< / span >   }< / div >
< div class = "line" > < a name = "l01180" > < / a > < span class = "lineno" > 1180< / span >   < / div >
< div class = "line" > < a name = "l01181" > < / a > < span class = "lineno" > 1181< / span >   < span class = "keywordtype" > void< / span > SimpleMinCostFlow::ResizeNodeVectors(< a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > node) {< / div >
< div class = "line" > < a name = "l01182" > < / a > < span class = "lineno" > 1182< / span >   < span class = "keywordflow" > if< / span > (node < node_supply_.size()) < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a name = "l01183" > < / a > < span class = "lineno" > 1183< / span >   node_supply_.resize(node + 1);< / div >
< div class = "line" > < a name = "l01184" > < / a > < span class = "lineno" > 1184< / span >   }< / div >
< div class = "line" > < a name = "l01185" > < / a > < span class = "lineno" > 1185< / span >   < / div >
< div class = "line" > < a name = "l01186" > < / a > < span class = "lineno" > 1186< / span >   } < span class = "comment" > // namespace operations_research< / span > < / div >
< div class = "ttc" id = "aalldiff__cst_8cc_html_a26e6db9bcc64b584051ecc28171ed11f" > < div class = "ttname" > < a href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > max< / a > < / div > < div class = "ttdeci" > int64_t max< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "alldiff__cst_8cc_source.html#l00140" > alldiff_cst.cc:140< / a > < / div > < / div >
< div class = "ttc" id = "aalldiff__cst_8cc_html_ad10edae0a852d72fb76afb1c77735045" > < div class = "ttname" > < a href = "alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045" > min< / a > < / div > < div class = "ttdeci" > int64_t min< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "alldiff__cst_8cc_source.html#l00139" > alldiff_cst.cc:139< / a > < / div > < / div >
< div class = "ttc" id = "abase_2logging_8h_html_a4395e95bab44e222cb2e77251017a0e2" > < div class = "ttname" > < a href = "base_2logging_8h.html#a4395e95bab44e222cb2e77251017a0e2" > DCHECK_LE< / a > < / div > < div class = "ttdeci" > #define DCHECK_LE(val1, val2)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00895" > base/logging.h:895< / a > < / div > < / div >
< div class = "ttc" id = "abase_2logging_8h_html_a7c0ce053b28d53aa4eaf3eb7fb71663b" > < div class = "ttname" > < a href = "base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b" > CHECK_EQ< / a > < / div > < div class = "ttdeci" > #define CHECK_EQ(val1, val2)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00705" > base/logging.h:705< / a > < / div > < / div >
< div class = "ttc" id = "abase_2logging_8h_html_aae2dc65d9ea248d54bf39daa986dd295" > < div class = "ttname" > < a href = "base_2logging_8h.html#aae2dc65d9ea248d54bf39daa986dd295" > DCHECK_GE< / a > < / div > < div class = "ttdeci" > #define DCHECK_GE(val1, val2)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00897" > base/logging.h:897< / a > < / div > < / div >
< div class = "ttc" id = "abase_2logging_8h_html_ab4f56aa24c4c9cddc47a6abd2d747f9a" > < div class = "ttname" > < a href = "base_2logging_8h.html#ab4f56aa24c4c9cddc47a6abd2d747f9a" > DCHECK_GT< / a > < / div > < div class = "ttdeci" > #define DCHECK_GT(val1, val2)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00898" > base/logging.h:898< / a > < / div > < / div >
< div class = "ttc" id = "abase_2logging_8h_html_accad43a85d781d53381cd53a9894b6ae" > < div class = "ttname" > < a href = "base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae" > LOG< / a > < / div > < div class = "ttdeci" > #define LOG(severity)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00423" > base/logging.h:423< / a > < / div > < / div >
< div class = "ttc" id = "abase_2logging_8h_html_ae17f8119c108cf3070bad3449c7e0006" > < div class = "ttname" > < a href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > < / div > < div class = "ttdeci" > #define DCHECK(condition)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00892" > base/logging.h:892< / a > < / div > < / div >
< div class = "ttc" id = "abase_2logging_8h_html_ae89df3243bbb8341130c7b3f44145ea0" > < div class = "ttname" > < a href = "base_2logging_8h.html#ae89df3243bbb8341130c7b3f44145ea0" > DCHECK_EQ< / a > < / div > < div class = "ttdeci" > #define DCHECK_EQ(val1, val2)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00893" > base/logging.h:893< / a > < / div > < / div >
< div class = "ttc" id = "abase_2logging_8h_html_afcaa7cadd41741bb855c2ada1d2ef927" > < div class = "ttname" > < a href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > < / div > < div class = "ttdeci" > #define VLOG(verboselevel)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00986" > base/logging.h:986< / a > < / div > < / div >
2021-01-26 11:28:50 +01:00
< div class = "ttc" id = "aclassoperations__research_1_1_ebert_graph_base_html_a7b505ba4a01bce342d049f5a8674da72" > < div class = "ttname" > < a href = "classoperations__research_1_1_ebert_graph_base.html#a7b505ba4a01bce342d049f5a8674da72" > operations_research::EbertGraphBase::AddArc< / a > < / div > < div class = "ttdeci" > ArcIndexType AddArc(NodeIndexType tail, NodeIndexType head)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ebert__graph_8h_source.html#l01001" > ebert_graph.h:1001< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_ebert_graph_html" > < div class = "ttname" > < a href = "classoperations__research_1_1_ebert_graph.html" > operations_research::EbertGraph< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ebert__graph_8h_source.html#l01186" > ebert_graph.h:1188< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_ebert_graph_html_aae684b1eb132c8c201f437d88e367b55" > < div class = "ttname" > < a href = "classoperations__research_1_1_ebert_graph.html#aae684b1eb132c8c201f437d88e367b55" > operations_research::EbertGraph::Tail< / a > < / div > < div class = "ttdeci" > NodeIndexType Tail(const ArcIndexType arc) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ebert__graph_8h_source.html#l01376" > ebert_graph.h:1376< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_a142146c1af2855fc821d7bd4c0af6130" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#a142146c1af2855fc821d7bd4c0af6130" > operations_research::GenericMaxFlow::GetOptimalFlow< / a > < / div > < div class = "ttdeci" > FlowQuantity GetOptimalFlow() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8h_source.html#l00361" > max_flow.h:361< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_a21776d0248204801a49c42b46902c1a1" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#a21776d0248204801a49c42b46902c1a1" > operations_research::GenericMaxFlow::SetArcCapacity< / a > < / div > < div class = "ttdeci" > void SetArcCapacity(ArcIndex arc, FlowQuantity new_capacity)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00175" > max_flow.cc:175< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_a2a420ad8221c326064736ccf148d2f93" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#a2a420ad8221c326064736ccf148d2f93" > operations_research::GenericMaxFlow::Flow< / a > < / div > < div class = "ttdeci" > FlowQuantity Flow(ArcIndex arc) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8h_source.html#l00365" > max_flow.h:365< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_a942f29030f08426e7e318204e987e2f7" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#a942f29030f08426e7e318204e987e2f7" > operations_research::GenericMaxFlow::Solve< / a > < / div > < div class = "ttdeci" > bool Solve()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00334" > max_flow.cc:334< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_aa4e5f2ba9abcf71460c68a4903abc7bc" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#aa4e5f2ba9abcf71460c68a4903abc7bc" > operations_research::GenericMaxFlow::SetCheckResult< / a > < / div > < div class = "ttdeci" > void SetCheckResult(bool value)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8h_source.html#l00420" > max_flow.h:420< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_aa76638d2f8eddf2c3d9778b3c1285010" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#aa76638d2f8eddf2c3d9778b3c1285010" > operations_research::GenericMaxFlow::SetCheckInput< / a > < / div > < div class = "ttdeci" > void SetCheckInput(bool value)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8h_source.html#l00419" > max_flow.h:419< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_min_cost_flow_html" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_min_cost_flow.html" > operations_research::GenericMinCostFlow< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8h_source.html#l00326" > min_cost_flow.h:326< / a > < / div > < / div >
2021-04-27 23:00:03 +02:00
< div class = "ttc" id = "aclassoperations__research_1_1_generic_min_cost_flow_html_a1057f1a98821c9237d75967b575f3829" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_min_cost_flow.html#a1057f1a98821c9237d75967b575f3829" > operations_research::GenericMinCostFlow::UnitCost< / a > < / div > < div class = "ttdeci" > CostValue UnitCost(ArcIndex arc) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8cc_source.html#l00416" > min_cost_flow.cc:416< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_min_cost_flow_html_a27a137ef3b0fb7f787eb460dcfd52591" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_min_cost_flow.html#a27a137ef3b0fb7f787eb460dcfd52591" > operations_research::GenericMinCostFlow::FeasibleSupply< / a > < / div > < div class = "ttdeci" > FlowQuantity FeasibleSupply(NodeIndex node) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8cc_source.html#l00439" > min_cost_flow.cc:439< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_min_cost_flow_html_a2a420ad8221c326064736ccf148d2f93" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_min_cost_flow.html#a2a420ad8221c326064736ccf148d2f93" > operations_research::GenericMinCostFlow::Flow< / a > < / div > < div class = "ttdeci" > FlowQuantity Flow(ArcIndex arc) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8cc_source.html#l00394" > min_cost_flow.cc:394< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_min_cost_flow_html_a3051a4b6d1a5a9fb5444f6d5a295a95c" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_min_cost_flow.html#a3051a4b6d1a5a9fb5444f6d5a295a95c" > operations_research::GenericMinCostFlow::MakeFeasible< / a > < / div > < div class = "ttdeci" > bool MakeFeasible()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8cc_source.html#l00381" > min_cost_flow.cc:381< / a > < / div > < / div >
2021-01-26 11:28:50 +01:00
< div class = "ttc" id = "aclassoperations__research_1_1_generic_min_cost_flow_html_a34e6d785d3dc22ee8d54bad8f1cf6cc2" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_min_cost_flow.html#a34e6d785d3dc22ee8d54bad8f1cf6cc2" > operations_research::GenericMinCostFlow::GenericMinCostFlow< / a > < / div > < div class = "ttdeci" > GenericMinCostFlow(const Graph *graph)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8cc_source.html#l00047" > min_cost_flow.cc:47< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_min_cost_flow_html_a44aa9e2f47277c91d8064c7126a2ff48" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_min_cost_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > operations_research::GenericMinCostFlow::ArcIndex< / a > < / div > < div class = "ttdeci" > Graph::ArcIndex ArcIndex< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8h_source.html#l00329" > min_cost_flow.h:329< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_min_cost_flow_html_a4ddaeee9414a17257bb052c459325caf" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_min_cost_flow.html#a4ddaeee9414a17257bb052c459325caf" > operations_research::GenericMinCostFlow::NodeIndex< / a > < / div > < div class = "ttdeci" > Graph::NodeIndex NodeIndex< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8h_source.html#l00328" > min_cost_flow.h:328< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_min_cost_flow_html_a7cd2dc0776a9f339b56ffac996a7df8c" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_min_cost_flow.html#a7cd2dc0776a9f339b56ffac996a7df8c" > operations_research::GenericMinCostFlow::SetNodeSupply< / a > < / div > < div class = "ttdeci" > void SetNodeSupply(NodeIndex node, FlowQuantity supply)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8cc_source.html#l00090" > min_cost_flow.cc:90< / a > < / div > < / div >
2021-04-27 23:00:03 +02:00
< div class = "ttc" id = "aclassoperations__research_1_1_generic_min_cost_flow_html_a84859dfe0d913de5132fd421bf5d002d" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_min_cost_flow.html#a84859dfe0d913de5132fd421bf5d002d" > operations_research::GenericMinCostFlow::InitialSupply< / a > < / div > < div class = "ttdeci" > FlowQuantity InitialSupply(NodeIndex node) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8cc_source.html#l00432" > min_cost_flow.cc:432< / a > < / div > < / div >
2021-01-26 11:28:50 +01:00
< div class = "ttc" id = "aclassoperations__research_1_1_generic_min_cost_flow_html_a89b020eea8abc71434d63071a1e38527" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_min_cost_flow.html#a89b020eea8abc71434d63071a1e38527" > operations_research::GenericMinCostFlow::SetArcFlow< / a > < / div > < div class = "ttdeci" > void SetArcFlow(ArcIndex arc, ArcFlowType new_flow)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8cc_source.html#l00149" > min_cost_flow.cc:149< / a > < / div > < / div >
2021-04-27 23:00:03 +02:00
< div class = "ttc" id = "aclassoperations__research_1_1_generic_min_cost_flow_html_a92607deae80e69a2a63cc2d8f5205bd5" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_min_cost_flow.html#a92607deae80e69a2a63cc2d8f5205bd5" > operations_research::GenericMinCostFlow::CheckFeasibility< / a > < / div > < div class = "ttdeci" > bool CheckFeasibility(std::vector< NodeIndex > *const infeasible_supply_node, std::vector< NodeIndex > *const infeasible_demand_node)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8cc_source.html#l00293" > min_cost_flow.cc:294< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_min_cost_flow_html_a942f29030f08426e7e318204e987e2f7" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_min_cost_flow.html#a942f29030f08426e7e318204e987e2f7" > operations_research::GenericMinCostFlow::Solve< / a > < / div > < div class = "ttdeci" > bool Solve()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8cc_source.html#l00493" > min_cost_flow.cc:493< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_min_cost_flow_html_a9dcd8610149406a1593d2a0725290482" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_min_cost_flow.html#a9dcd8610149406a1593d2a0725290482" > operations_research::GenericMinCostFlow::Capacity< / a > < / div > < div class = "ttdeci" > FlowQuantity Capacity(ArcIndex arc) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8cc_source.html#l00406" > min_cost_flow.cc:406< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_min_cost_flow_html_aafd4139404e4f42af650481c3ff10cc7" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_min_cost_flow.html#aafd4139404e4f42af650481c3ff10cc7" > operations_research::GenericMinCostFlow::Supply< / a > < / div > < div class = "ttdeci" > FlowQuantity Supply(NodeIndex node) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8cc_source.html#l00424" > min_cost_flow.cc:424< / a > < / div > < / div >
2021-01-26 11:28:50 +01:00
< div class = "ttc" id = "aclassoperations__research_1_1_generic_min_cost_flow_html_ab7f4041c8667d63761aecb9657823945" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_min_cost_flow.html#ab7f4041c8667d63761aecb9657823945" > operations_research::GenericMinCostFlow::SetArcUnitCost< / a > < / div > < div class = "ttdeci" > void SetArcUnitCost(ArcIndex arc, ArcScaledCostType unit_cost)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8cc_source.html#l00100" > min_cost_flow.cc:100< / a > < / div > < / div >
2020-10-09 12:00:09 +02:00
< div class = "ttc" id = "aclassoperations__research_1_1_generic_min_cost_flow_html_aeb6622ffa760bc9403144736f8ac4ad4" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_min_cost_flow.html#aeb6622ffa760bc9403144736f8ac4ad4" > operations_research::GenericMinCostFlow::SetArcCapacity< / a > < / div > < div class = "ttdeci" > void SetArcCapacity(ArcIndex arc, ArcFlowType new_capacity)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8cc_source.html#l00110" > min_cost_flow.cc:110< / a > < / div > < / div >
2021-01-26 11:28:50 +01:00
< div class = "ttc" id = "aclassoperations__research_1_1_math_util_html_a5a6f14696b2a09c97b58e4f0989b19e7" > < div class = "ttname" > < a href = "classoperations__research_1_1_math_util.html#a5a6f14696b2a09c97b58e4f0989b19e7" > operations_research::MathUtil::Abs< / a > < / div > < div class = "ttdeci" > static T Abs(const T x)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "mathutil_8h_source.html#l00095" > mathutil.h:95< / a > < / div > < / div >
2020-10-09 12:00:09 +02:00
< div class = "ttc" id = "aclassoperations__research_1_1_max_flow_html" > < div class = "ttname" > < a href = "classoperations__research_1_1_max_flow.html" > operations_research::MaxFlow< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8h_source.html#l00652" > max_flow.h:652< / a > < / div > < / div >
2021-01-26 11:28:50 +01:00
< div class = "ttc" id = "aclassoperations__research_1_1_max_flow_status_class_html_a67a0db04d321a74b7e7fcfd3f1a3f70ba0e6873a155f86a4695f463bf8601d05f" > < div class = "ttname" > < a href = "classoperations__research_1_1_max_flow_status_class.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba0e6873a155f86a4695f463bf8601d05f" > operations_research::MaxFlowStatusClass::NOT_SOLVED< / a > < / div > < div class = "ttdeci" > @ NOT_SOLVED< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8h_source.html#l00303" > max_flow.h:303< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_max_flow_status_class_html_a67a0db04d321a74b7e7fcfd3f1a3f70ba2579881e7c83261bc21bafb5a5c92cad" > < div class = "ttname" > < a href = "classoperations__research_1_1_max_flow_status_class.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba2579881e7c83261bc21bafb5a5c92cad" > operations_research::MaxFlowStatusClass::OPTIMAL< / a > < / div > < div class = "ttdeci" > @ OPTIMAL< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8h_source.html#l00304" > max_flow.h:304< / a > < / div > < / div >
2020-10-09 12:00:09 +02:00
< div class = "ttc" id = "aclassoperations__research_1_1_min_cost_flow_base_html_a67a0db04d321a74b7e7fcfd3f1a3f70b" > < div class = "ttname" > < a href = "classoperations__research_1_1_min_cost_flow_base.html#a67a0db04d321a74b7e7fcfd3f1a3f70b" > operations_research::MinCostFlowBase::Status< / a > < / div > < div class = "ttdeci" > Status< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8h_source.html#l00194" > min_cost_flow.h:194< / a > < / div > < / div >
2021-01-26 11:28:50 +01:00
< div class = "ttc" id = "aclassoperations__research_1_1_min_cost_flow_base_html_a67a0db04d321a74b7e7fcfd3f1a3f70ba0e6873a155f86a4695f463bf8601d05f" > < div class = "ttname" > < a href = "classoperations__research_1_1_min_cost_flow_base.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba0e6873a155f86a4695f463bf8601d05f" > operations_research::MinCostFlowBase::NOT_SOLVED< / a > < / div > < div class = "ttdeci" > @ NOT_SOLVED< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8h_source.html#l00195" > min_cost_flow.h:195< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_min_cost_flow_base_html_a67a0db04d321a74b7e7fcfd3f1a3f70ba2579881e7c83261bc21bafb5a5c92cad" > < div class = "ttname" > < a href = "classoperations__research_1_1_min_cost_flow_base.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba2579881e7c83261bc21bafb5a5c92cad" > operations_research::MinCostFlowBase::OPTIMAL< / a > < / div > < div class = "ttdeci" > @ OPTIMAL< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8h_source.html#l00196" > min_cost_flow.h:196< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_min_cost_flow_base_html_a67a0db04d321a74b7e7fcfd3f1a3f70ba2884fa43446c0cbc9c7a9b74d41d7483" > < div class = "ttname" > < a href = "classoperations__research_1_1_min_cost_flow_base.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba2884fa43446c0cbc9c7a9b74d41d7483" > operations_research::MinCostFlowBase::INFEASIBLE< / a > < / div > < div class = "ttdeci" > @ INFEASIBLE< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8h_source.html#l00198" > min_cost_flow.h:198< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_min_cost_flow_base_html_a67a0db04d321a74b7e7fcfd3f1a3f70ba6a2175a75814f119266396a0e9681718" > < div class = "ttname" > < a href = "classoperations__research_1_1_min_cost_flow_base.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba6a2175a75814f119266396a0e9681718" > operations_research::MinCostFlowBase::UNBALANCED< / a > < / div > < div class = "ttdeci" > @ UNBALANCED< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8h_source.html#l00199" > min_cost_flow.h:199< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_min_cost_flow_base_html_a67a0db04d321a74b7e7fcfd3f1a3f70bac76ecfd837bdc6d4150bb02c403356e4" > < div class = "ttname" > < a href = "classoperations__research_1_1_min_cost_flow_base.html#a67a0db04d321a74b7e7fcfd3f1a3f70bac76ecfd837bdc6d4150bb02c403356e4" > operations_research::MinCostFlowBase::BAD_RESULT< / a > < / div > < div class = "ttdeci" > @ BAD_RESULT< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8h_source.html#l00200" > min_cost_flow.h:200< / a > < / div > < / div >
2021-04-27 23:00:03 +02:00
< div class = "ttc" id = "aclassoperations__research_1_1_simple_min_cost_flow_html_a1057f1a98821c9237d75967b575f3829" > < div class = "ttname" > < a href = "classoperations__research_1_1_simple_min_cost_flow.html#a1057f1a98821c9237d75967b575f3829" > operations_research::SimpleMinCostFlow::UnitCost< / a > < / div > < div class = "ttdeci" > CostValue UnitCost(ArcIndex arc) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8cc_source.html#l01173" > min_cost_flow.cc:1173< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_simple_min_cost_flow_html_a20e10ea36c32c30c5130f300f1ffde2e" > < div class = "ttname" > < a href = "classoperations__research_1_1_simple_min_cost_flow.html#a20e10ea36c32c30c5130f300f1ffde2e" > operations_research::SimpleMinCostFlow::AddArcWithCapacityAndUnitCost< / a > < / div > < div class = "ttdeci" > ArcIndex AddArcWithCapacityAndUnitCost(NodeIndex tail, NodeIndex head, FlowQuantity capacity, CostValue unit_cost)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8cc_source.html#l01018" > min_cost_flow.cc:1018< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_simple_min_cost_flow_html_a2a420ad8221c326064736ccf148d2f93" > < div class = "ttname" > < a href = "classoperations__research_1_1_simple_min_cost_flow.html#a2a420ad8221c326064736ccf148d2f93" > operations_research::SimpleMinCostFlow::Flow< / a > < / div > < div class = "ttdeci" > FlowQuantity Flow(ArcIndex arc) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8cc_source.html#l01157" > min_cost_flow.cc:1157< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_simple_min_cost_flow_html_a3351fc1eb1dce4a7f6b937db874b5de1" > < div class = "ttname" > < a href = "classoperations__research_1_1_simple_min_cost_flow.html#a3351fc1eb1dce4a7f6b937db874b5de1" > operations_research::SimpleMinCostFlow::MaximumFlow< / a > < / div > < div class = "ttdeci" > FlowQuantity MaximumFlow() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8cc_source.html#l01155" > min_cost_flow.cc:1155< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_simple_min_cost_flow_html_a3be0f6fcc44bc6a4a1e976c1e60b31d0" > < div class = "ttname" > < a href = "classoperations__research_1_1_simple_min_cost_flow.html#a3be0f6fcc44bc6a4a1e976c1e60b31d0" > operations_research::SimpleMinCostFlow::NumNodes< / a > < / div > < div class = "ttdeci" > NodeIndex NumNodes() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8cc_source.html#l01161" > min_cost_flow.cc:1161< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_simple_min_cost_flow_html_a6d65a7ab08c98b332781f187776683e5" > < div class = "ttname" > < a href = "classoperations__research_1_1_simple_min_cost_flow.html#a6d65a7ab08c98b332781f187776683e5" > operations_research::SimpleMinCostFlow::SimpleMinCostFlow< / a > < / div > < div class = "ttdeci" > SimpleMinCostFlow(NodeIndex reserve_num_nodes=0, ArcIndex reserve_num_arcs=0)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8cc_source.html#l00998" > min_cost_flow.cc:998< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_simple_min_cost_flow_html_a7898be8b7efbfe53a58fcf621cf41315" > < div class = "ttname" > < a href = "classoperations__research_1_1_simple_min_cost_flow.html#a7898be8b7efbfe53a58fcf621cf41315" > operations_research::SimpleMinCostFlow::NumArcs< / a > < / div > < div class = "ttdeci" > ArcIndex NumArcs() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8cc_source.html#l01163" > min_cost_flow.cc:1163< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_simple_min_cost_flow_html_a7cd2dc0776a9f339b56ffac996a7df8c" > < div class = "ttname" > < a href = "classoperations__research_1_1_simple_min_cost_flow.html#a7cd2dc0776a9f339b56ffac996a7df8c" > operations_research::SimpleMinCostFlow::SetNodeSupply< / a > < / div > < div class = "ttdeci" > void SetNodeSupply(NodeIndex node, FlowQuantity supply)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8cc_source.html#l01013" > min_cost_flow.cc:1013< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_simple_min_cost_flow_html_a8f17f2cebe15f0a8f2b072738093379d" > < div class = "ttname" > < a href = "classoperations__research_1_1_simple_min_cost_flow.html#a8f17f2cebe15f0a8f2b072738093379d" > operations_research::SimpleMinCostFlow::Tail< / a > < / div > < div class = "ttdeci" > NodeIndex Tail(ArcIndex arc) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8cc_source.html#l01165" > min_cost_flow.cc:1165< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_simple_min_cost_flow_html_a9dcd8610149406a1593d2a0725290482" > < div class = "ttname" > < a href = "classoperations__research_1_1_simple_min_cost_flow.html#a9dcd8610149406a1593d2a0725290482" > operations_research::SimpleMinCostFlow::Capacity< / a > < / div > < div class = "ttdeci" > FlowQuantity Capacity(ArcIndex arc) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8cc_source.html#l01169" > min_cost_flow.cc:1169< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_simple_min_cost_flow_html_aafd4139404e4f42af650481c3ff10cc7" > < div class = "ttname" > < a href = "classoperations__research_1_1_simple_min_cost_flow.html#aafd4139404e4f42af650481c3ff10cc7" > operations_research::SimpleMinCostFlow::Supply< / a > < / div > < div class = "ttdeci" > FlowQuantity Supply(NodeIndex node) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8cc_source.html#l01177" > min_cost_flow.cc:1177< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_simple_min_cost_flow_html_acf6f87e72f7535b5dfe004740ef52a1d" > < div class = "ttname" > < a href = "classoperations__research_1_1_simple_min_cost_flow.html#acf6f87e72f7535b5dfe004740ef52a1d" > operations_research::SimpleMinCostFlow::Head< / a > < / div > < div class = "ttdeci" > NodeIndex Head(ArcIndex arc) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8cc_source.html#l01167" > min_cost_flow.cc:1167< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_simple_min_cost_flow_html_ad39ce7ee10c34a3ce1f69f179aa4f1e9" > < div class = "ttname" > < a href = "classoperations__research_1_1_simple_min_cost_flow.html#ad39ce7ee10c34a3ce1f69f179aa4f1e9" > operations_research::SimpleMinCostFlow::OptimalCost< / a > < / div > < div class = "ttdeci" > CostValue OptimalCost() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "min__cost__flow_8cc_source.html#l01153" > min_cost_flow.cc:1153< / a > < / div > < / div >
2021-01-26 11:28:50 +01:00
< div class = "ttc" id = "aclassoperations__research_1_1_star_graph_base_html_a5237cfbb86ec8f305e498e873e5c4e95" > < div class = "ttname" > < a href = "classoperations__research_1_1_star_graph_base.html#a5237cfbb86ec8f305e498e873e5c4e95" > operations_research::StarGraphBase::Head< / a > < / div > < div class = "ttdeci" > NodeIndexType Head(const ArcIndexType arc) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ebert__graph_8h_source.html#l00297" > ebert_graph.h:297< / a > < / div > < / div >
2021-04-27 23:00:03 +02:00
< div class = "ttc" id = "aclassoperations__research_1_1_z_vector_html_a6d0d87121f91870c74db35aa4edfdc69" > < div class = "ttname" > < a href = "classoperations__research_1_1_z_vector.html#a6d0d87121f91870c74db35aa4edfdc69" > operations_research::ZVector::Reserve< / a > < / div > < div class = "ttdeci" > bool Reserve(int64_t new_min_index, int64_t new_max_index)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "zvector_8h_source.html#l00098" > zvector.h:98< / a > < / div > < / div >
2021-01-26 11:28:50 +01:00
< div class = "ttc" id = "aclassoperations__research_1_1_z_vector_html_ad5721f29af64d2e2ae014ead96192591" > < div class = "ttname" > < a href = "classoperations__research_1_1_z_vector.html#ad5721f29af64d2e2ae014ead96192591" > operations_research::ZVector::SetAll< / a > < / div > < div class = "ttdeci" > void SetAll(T value)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "zvector_8h_source.html#l00133" > zvector.h:133< / a > < / div > < / div >
2021-04-27 23:00:03 +02:00
< div class = "ttc" id = "aclassutil_1_1_reverse_arc_static_graph_html" > < div class = "ttname" > < a href = "classutil_1_1_reverse_arc_static_graph.html" > util::ReverseArcStaticGraph< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "graph_8h_source.html#l00549" > graph.h:550< / a > < / div > < / div >
2021-01-26 11:28:50 +01:00
< div class = "ttc" id = "acommandlineflags_8h_html" > < div class = "ttname" > < a href = "commandlineflags_8h.html" > commandlineflags.h< / a > < / div > < / div >
< div class = "ttc" id = "agraph_8h_html" > < div class = "ttname" > < a href = "graph_8h.html" > graph.h< / a > < / div > < / div >
< div class = "ttc" id = "agraphs_8h_html" > < div class = "ttname" > < a href = "graphs_8h.html" > graphs.h< / a > < / div > < / div >
2021-04-27 23:00:03 +02:00
< div class = "ttc" id = "agurobi__interface_8cc_html_a5f287b83a753915ae862fed64f8640a6" > < div class = "ttname" > < a href = "gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6" > context< / a > < / div > < div class = "ttdeci" > GurobiMPCallbackContext * context< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "gurobi__interface_8cc_source.html#l00513" > gurobi_interface.cc:513< / a > < / div > < / div >
2021-01-26 11:28:50 +01:00
< div class = "ttc" id = "alog__severity_8h_html_ac9bcbe19995a8140cd4ec61773cd6e67" > < div class = "ttname" > < a href = "log__severity_8h.html#ac9bcbe19995a8140cd4ec61773cd6e67" > ERROR< / a > < / div > < div class = "ttdeci" > const int ERROR< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "log__severity_8h_source.html#l00032" > log_severity.h:32< / a > < / div > < / div >
< div class = "ttc" id = "amathutil_8h_html" > < div class = "ttname" > < a href = "mathutil_8h.html" > mathutil.h< / a > < / div > < / div >
< div class = "ttc" id = "amax__flow_8h_html" > < div class = "ttname" > < a href = "max__flow_8h.html" > max_flow.h< / a > < / div > < / div >
2021-04-27 23:00:03 +02:00
< div class = "ttc" id = "amin__cost__flow_8cc_html_ab29882272822b270edac48bc8b0ab14e" > < div class = "ttname" > < a href = "min__cost__flow_8cc.html#ab29882272822b270edac48bc8b0ab14e" > ABSL_FLAG< / a > < / div > < div class = "ttdeci" > ABSL_FLAG(int64_t, min_cost_flow_alpha, 5, " Divide factor for epsilon at each refine step." )< / div > < / div >
2021-01-26 11:28:50 +01:00
< div class = "ttc" id = "amin__cost__flow_8h_html" > < div class = "ttname" > < a href = "min__cost__flow_8h.html" > min_cost_flow.h< / a > < / div > < / div >
2020-11-18 14:53:30 +01:00
< div class = "ttc" id = "anamespaceabsl_html" > < div class = "ttname" > < a href = "namespaceabsl.html" > absl< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cleanup_8h_source.html#l00022" > cleanup.h:22< / a > < / div > < / div >
2021-04-27 23:00:03 +02:00
< div class = "ttc" id = "anamespaceoperations__research_1_1data_1_1vbp_html_a4604191fbd84a43686f44c25d7bd0161a2579881e7c83261bc21bafb5a5c92cad" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1data_1_1vbp.html#a4604191fbd84a43686f44c25d7bd0161a2579881e7c83261bc21bafb5a5c92cad" > operations_research::data::vbp::OPTIMAL< / a > < / div > < div class = "ttdeci" > @ OPTIMAL< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "vector__bin__packing_8pb_8h_source.html#l00088" > vector_bin_packing.pb.h:88< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1data_1_1vbp_html_a4604191fbd84a43686f44c25d7bd0161a2884fa43446c0cbc9c7a9b74d41d7483" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1data_1_1vbp.html#a4604191fbd84a43686f44c25d7bd0161a2884fa43446c0cbc9c7a9b74d41d7483" > operations_research::data::vbp::INFEASIBLE< / a > < / div > < div class = "ttdeci" > @ INFEASIBLE< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "vector__bin__packing_8pb_8h_source.html#l00090" > vector_bin_packing.pb.h:90< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_html" > < div class = "ttname" > < a href = "namespaceoperations__research.html" > operations_research< / a > < / div > < div class = "ttdoc" > Collection of objects used to extend the Constraint Solver library.< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "dense__doubly__linked__list_8h_source.html#l00021" > dense_doubly_linked_list.h:21< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_html_a259d58fc853dd928f2148dbcf1ef25cd" > < div class = "ttname" > < a href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > operations_research::FlowQuantity< / a > < / div > < div class = "ttdeci" > int64_t FlowQuantity< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ebert__graph_8h_source.html#l00202" > ebert_graph.h:202< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_html_a7ae31ba4c3b4899478e53ca13df35dfc" > < div class = "ttname" > < a href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > operations_research::NodeIndex< / a > < / div > < div class = "ttdeci" > int32_t NodeIndex< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ebert__graph_8h_source.html#l00200" > ebert_graph.h:192< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_html_aecf320bda6e95d1edaf3a546673e3e6b" > < div class = "ttname" > < a href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > operations_research::ArcIndex< / a > < / div > < div class = "ttdeci" > int32_t ArcIndex< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ebert__graph_8h_source.html#l00201" > ebert_graph.h:201< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_html_aee97ac67f280d35acdef2c5d461a85c3" > < div class = "ttname" > < a href = "namespaceoperations__research.html#aee97ac67f280d35acdef2c5d461a85c3" > operations_research::CostValue< / a > < / div > < div class = "ttdeci" > int64_t CostValue< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "ebert__graph_8h_source.html#l00203" > ebert_graph.h:203< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceutil_html_a2f76166dbe0c4055a1f256235ad00478" > < div class = "ttname" > < a href = "namespaceutil.html#a2f76166dbe0c4055a1f256235ad00478" > util::Graph< / a > < / div > < div class = "ttdeci" > ListGraph Graph< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "graph_8h_source.html#l02361" > graph.h:2361< / a > < / div > < / div >
< div class = "ttc" id = "apack_8cc_html_a750b5d744c39a06bfb13e6eb010e35d0" > < div class = "ttname" > < a href = "pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > < / div > < div class = "ttdeci" > int index< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "pack_8cc_source.html#l00509" > pack.cc:509< / a > < / div > < / div >
< div class = "ttc" id = "aresource_8cc_html_af12056bc2a8e3ec563f0940d87abbd2e" > < div class = "ttname" > < a href = "resource_8cc.html#af12056bc2a8e3ec563f0940d87abbd2e" > delta< / a > < / div > < div class = "ttdeci" > int64_t delta< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "resource_8cc_source.html#l01692" > resource.cc:1692< / a > < / div > < / div >
< div class = "ttc" id = "arouting__flow_8cc_html_a2acb49f4df5288066c43610bede123ec" > < div class = "ttname" > < a href = "routing__flow_8cc.html#a2acb49f4df5288066c43610bede123ec" > capacity< / a > < / div > < div class = "ttdeci" > int64_t capacity< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "routing__flow_8cc_source.html#l00151" > routing_flow.cc:151< / a > < / div > < / div >
< div class = "ttc" id = "arouting__flow_8cc_html_a64e7efc5529154ba56903e75f5300990" > < div class = "ttname" > < a href = "routing__flow_8cc.html#a64e7efc5529154ba56903e75f5300990" > tail< / a > < / div > < div class = "ttdeci" > int64_t tail< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "routing__flow_8cc_source.html#l00149" > routing_flow.cc:149< / a > < / div > < / div >
< div class = "ttc" id = "arouting__flow_8cc_html_a75d7b5e4cab1e156cc7a2c5eba1e16f1" > < div class = "ttname" > < a href = "routing__flow_8cc.html#a75d7b5e4cab1e156cc7a2c5eba1e16f1" > cost< / a > < / div > < div class = "ttdeci" > int64_t cost< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "routing__flow_8cc_source.html#l00152" > routing_flow.cc:152< / a > < / div > < / div >
< div class = "ttc" id = "arouting__flow_8cc_html_afca32f65388659a4b0956496169488b4" > < div class = "ttname" > < a href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > < / div > < div class = "ttdeci" > int64_t head< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "routing__flow_8cc_source.html#l00150" > routing_flow.cc:150< / a > < / div > < / div >
< div class = "ttc" id = "astats_8h_html_a3c3e6b102f0d91c523099325c98e1887" > < div class = "ttname" > < a href = "stats_8h.html#a3c3e6b102f0d91c523099325c98e1887" > IF_STATS_ENABLED< / a > < / div > < div class = "ttdeci" > #define IF_STATS_ENABLED(instructions)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "stats_8h_source.html#l00437" > stats.h:437< / a > < / div > < / div >
< div class = "ttc" id = "astats_8h_html_a9995704aaaf45fc21e08c847551a8d04" > < div class = "ttname" > < a href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > < / div > < div class = "ttdeci" > #define SCOPED_TIME_STAT(stats)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "stats_8h_source.html#l00438" > stats.h:438< / a > < / div > < / div >
2021-01-26 11:28:50 +01:00
< div class = "ttc" id = "astructoperations__research_1_1_graphs_html_a42fb6857e088a176a53232b910715260" > < div class = "ttname" > < a href = "structoperations__research_1_1_graphs.html#a42fb6857e088a176a53232b910715260" > operations_research::Graphs::ArcReservation< / a > < / div > < div class = "ttdeci" > static ArcIndex ArcReservation(const Graph & graph)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "graphs_8h_source.html#l00039" > graphs.h:39< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1_graphs_html_a9d530d16efbea1a29d61cb0325980a50" > < div class = "ttname" > < a href = "structoperations__research_1_1_graphs.html#a9d530d16efbea1a29d61cb0325980a50" > operations_research::Graphs::NodeReservation< / a > < / div > < div class = "ttdeci" > static NodeIndex NodeReservation(const Graph & graph)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "graphs_8h_source.html#l00036" > graphs.h:36< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1_graphs_html_ae02cd8602383e4fb48a8a933325db5fd" > < div class = "ttname" > < a href = "structoperations__research_1_1_graphs.html#ae02cd8602383e4fb48a8a933325db5fd" > operations_research::Graphs::IsArcValid< / a > < / div > < div class = "ttdeci" > static bool IsArcValid(const Graph & graph, ArcIndex arc)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "graphs_8h_source.html#l00033" > graphs.h:33< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1_graphs_html_ae9cc106c6139c0b4e57057594bf56ea8" > < div class = "ttname" > < a href = "structoperations__research_1_1_graphs.html#ae9cc106c6139c0b4e57057594bf56ea8" > operations_research::Graphs::OppositeArc< / a > < / div > < div class = "ttdeci" > static ArcIndex OppositeArc(const Graph & graph, ArcIndex arc)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "graphs_8h_source.html#l00030" > graphs.h:30< / a > < / div > < / div >
< / div > <!-- fragment --> < / div > <!-- contents -->
< / div > <!-- doc - content -->
2020-09-02 09:42:51 +02:00
<!-- HTML footer for doxygen 1.8.18 -->
<!-- start footer part -->
< div id = "nav-path" class = "navpath" > <!-- id is needed for treeview function! -->
< ul >
< li class = "navelem" > < a class = "el" href = "dir_a7cc1eeded8f693d0da6c729bc88c45a.html" > ortools< / a > < / li > < li class = "navelem" > < a class = "el" href = "dir_725f3a5915051842f84e3ea508be2a62.html" > graph< / a > < / li > < li class = "navelem" > < a class = "el" href = "min__cost__flow_8cc.html" > min_cost_flow.cc< / a > < / li >
< li class = "footer" > Generated by
< a href = "http://www.doxygen.org/index.html" >
2021-01-26 11:28:50 +01:00
< img class = "footer" src = "doxygen.png" alt = "doxygen" / > < / a > 1.9.1 < / li >
2020-09-02 09:42:51 +02:00
< / ul >
< / div >
< / body >
< / html >
