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: max_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('max__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" > max_flow.cc< / div > < / div >
< / div > <!-- header -->
< div class = "contents" >
2021-04-27 23:00:03 +02:00
< a href = "max__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 = "max__flow_8h.html" > ortools/graph/max_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 >   < / div >
< div class = "line" > < a name = "l00018" > < / a > < span class = "lineno" > 18< / span >   < span class = "preprocessor" > #include " absl/memory/memory.h" < / span > < / div >
< div class = "line" > < a name = "l00019" > < / a > < span class = "lineno" > 19< / span >   < span class = "preprocessor" > #include " absl/strings/str_format.h" < / span > < / div >
< div class = "line" > < a name = "l00020" > < / a > < span class = "lineno" > 20< / span >   < span class = "preprocessor" > #include " < a class = "code" href = "graph_8h.html" > ortools/graph/graph.h< / a > " < / span > < / div >
< div class = "line" > < a name = "l00021" > < / a > < span class = "lineno" > 21< / span >   < span class = "preprocessor" > #include " < a class = "code" href = "graphs_8h.html" > ortools/graph/graphs.h< / a > " < / span > < / div >
< div class = "line" > < a name = "l00022" > < / a > < span class = "lineno" > 22< / span >   < / div >
< div class = "line" > < a name = "l00023" > < / a > < span class = "lineno" > 23< / span >   < span class = "keyword" > namespace < / span > < a class = "code" href = "namespaceoperations__research.html" > operations_research< / a > {< / div >
< div class = "line" > < a name = "l00024" > < / a > < span class = "lineno" > 24< / span >   < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00025" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_simple_max_flow.html#a0b218e6bdef5560b441d7dc1b47d897f" > 25< / a > < / span >   < a class = "code" href = "classoperations__research_1_1_simple_max_flow.html#a0b218e6bdef5560b441d7dc1b47d897f" > SimpleMaxFlow::SimpleMaxFlow< / a > () : num_nodes_(0) {}< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00026" > < / a > < span class = "lineno" > 26< / span >   < / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00027" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_simple_max_flow.html#a9d8699dbc3e3b9cadc36d4fd5ee29dce" > 27< / a > < / span >   < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > < a class = "code" href = "classoperations__research_1_1_simple_max_flow.html#a9d8699dbc3e3b9cadc36d4fd5ee29dce" > SimpleMaxFlow::AddArcWithCapacity< / a > (< a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > < a class = "code" href = "routing__flow_8cc.html#a64e7efc5529154ba56903e75f5300990" > tail< / a > , < 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 = "l00028" > < / a > < span class = "lineno" > 28< / 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 = "l00029" > < / a > < span class = "lineno" > 29< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > num_arcs = arc_tail_.size();< / div >
< div class = "line" > < a name = "l00030" > < / a > < span class = "lineno" > 30< / span >   num_nodes_ = < a class = "code" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > (num_nodes_, < a class = "code" href = "routing__flow_8cc.html#a64e7efc5529154ba56903e75f5300990" > tail< / a > + 1);< / div >
< div class = "line" > < a name = "l00031" > < / a > < span class = "lineno" > 31< / span >   num_nodes_ = < a class = "code" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > (num_nodes_, < a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > + 1);< / div >
< div class = "line" > < a name = "l00032" > < / a > < span class = "lineno" > 32< / span >   arc_tail_.push_back(< a class = "code" href = "routing__flow_8cc.html#a64e7efc5529154ba56903e75f5300990" > tail< / a > );< / div >
< div class = "line" > < a name = "l00033" > < / a > < span class = "lineno" > 33< / span >   arc_head_.push_back(< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > );< / div >
< div class = "line" > < a name = "l00034" > < / a > < span class = "lineno" > 34< / span >   arc_capacity_.push_back(< a class = "code" href = "routing__flow_8cc.html#a2acb49f4df5288066c43610bede123ec" > capacity< / a > );< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00035" > < / a > < span class = "lineno" > 35< / span >   < span class = "keywordflow" > return< / span > num_arcs;< / div >
< div class = "line" > < a name = "l00036" > < / a > < span class = "lineno" > 36< / span >   }< / div >
< div class = "line" > < a name = "l00037" > < / a > < span class = "lineno" > 37< / span >   < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00038" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_simple_max_flow.html#a3be0f6fcc44bc6a4a1e976c1e60b31d0" > 38< / a > < / span >   < a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > < a class = "code" href = "classoperations__research_1_1_simple_max_flow.html#a3be0f6fcc44bc6a4a1e976c1e60b31d0" > SimpleMaxFlow::NumNodes< / a > ()< span class = "keyword" > const < / span > { < span class = "keywordflow" > return< / span > num_nodes_; }< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00039" > < / a > < span class = "lineno" > 39< / span >   < / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00040" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_simple_max_flow.html#a7898be8b7efbfe53a58fcf621cf41315" > 40< / a > < / span >   < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > < a class = "code" href = "classoperations__research_1_1_simple_max_flow.html#a7898be8b7efbfe53a58fcf621cf41315" > SimpleMaxFlow::NumArcs< / a > ()< span class = "keyword" > const < / span > { < span class = "keywordflow" > return< / span > arc_tail_.size(); }< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00041" > < / a > < span class = "lineno" > 41< / span >   < / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00042" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_simple_max_flow.html#ab49dbdb731f80e626e575bdf66835f46" > 42< / a > < / span >   < a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > < a class = "code" href = "classoperations__research_1_1_simple_max_flow.html#ab49dbdb731f80e626e575bdf66835f46" > SimpleMaxFlow::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 >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00043" > < / a > < span class = "lineno" > 43< / span >   < / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00044" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_simple_max_flow.html#aa5f729a6274027e5e5478e4bd76603ca" > 44< / a > < / span >   < a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > < a class = "code" href = "classoperations__research_1_1_simple_max_flow.html#aa5f729a6274027e5e5478e4bd76603ca" > SimpleMaxFlow::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 >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00045" > < / a > < span class = "lineno" > 45< / span >   < / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00046" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_simple_max_flow.html#a9dcd8610149406a1593d2a0725290482" > 46< / a > < / span >   < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > < a class = "code" href = "classoperations__research_1_1_simple_max_flow.html#a9dcd8610149406a1593d2a0725290482" > SimpleMaxFlow::Capacity< / a > (< a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc)< span class = "keyword" > const < / span > {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00047" > < / a > < span class = "lineno" > 47< / span >   < span class = "keywordflow" > return< / span > arc_capacity_[arc];< / div >
< div class = "line" > < a name = "l00048" > < / a > < span class = "lineno" > 48< / span >   }< / div >
< div class = "line" > < a name = "l00049" > < / a > < span class = "lineno" > 49< / span >   < / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00050" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_simple_max_flow.html#ac7bfd46bed70e12f118aa53df0c26769" > 50< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "classoperations__research_1_1_simple_max_flow.html#ac7bfd46bed70e12f118aa53df0c26769" > SimpleMaxFlow::SetArcCapacity< / a > (< a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc, < 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 = "l00051" > < / a > < span class = "lineno" > 51< / span >   arc_capacity_[arc] = < a class = "code" href = "routing__flow_8cc.html#a2acb49f4df5288066c43610bede123ec" > capacity< / a > ;< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00052" > < / a > < span class = "lineno" > 52< / span >   }< / div >
< div class = "line" > < a name = "l00053" > < / a > < span class = "lineno" > 53< / span >   < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00054" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_simple_max_flow.html#a57f5767b51471aa3c021db1cb451726e" > 54< / a > < / span >   < a class = "code" href = "classoperations__research_1_1_simple_max_flow.html#a67a0db04d321a74b7e7fcfd3f1a3f70b" > SimpleMaxFlow::Status< / a > < a class = "code" href = "classoperations__research_1_1_simple_max_flow.html#a57f5767b51471aa3c021db1cb451726e" > SimpleMaxFlow::Solve< / a > (< a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > source, < a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > sink) {< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00055" > < / a > < span class = "lineno" > 55< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > num_arcs = arc_capacity_.size();< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00056" > < / a > < span class = "lineno" > 56< / span >   arc_flow_.assign(num_arcs, 0);< / div >
< div class = "line" > < a name = "l00057" > < / a > < span class = "lineno" > 57< / span >   underlying_max_flow_.reset();< / div >
< div class = "line" > < a name = "l00058" > < / a > < span class = "lineno" > 58< / span >   underlying_graph_.reset();< / div >
< div class = "line" > < a name = "l00059" > < / a > < span class = "lineno" > 59< / span >   optimal_flow_ = 0;< / div >
< div class = "line" > < a name = "l00060" > < / a > < span class = "lineno" > 60< / span >   < span class = "keywordflow" > if< / span > (source == sink || source < 0 || sink < 0) {< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00061" > < / a > < span class = "lineno" > 61< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "classoperations__research_1_1_simple_max_flow.html#a67a0db04d321a74b7e7fcfd3f1a3f70bac2811be86dd03c6735e3b0db51ad914f" > BAD_INPUT< / a > ;< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00062" > < / a > < span class = "lineno" > 62< / span >   }< / div >
< div class = "line" > < a name = "l00063" > < / a > < span class = "lineno" > 63< / span >   < span class = "keywordflow" > if< / span > (source > = num_nodes_ || sink > = num_nodes_) {< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00064" > < / a > < span class = "lineno" > 64< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "classoperations__research_1_1_simple_max_flow.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba2579881e7c83261bc21bafb5a5c92cad" > OPTIMAL< / a > ;< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00065" > < / a > < span class = "lineno" > 65< / span >   }< / div >
< div class = "line" > < a name = "l00066" > < / a > < span class = "lineno" > 66< / span >   underlying_graph_ = absl::make_unique< Graph> (num_nodes_, num_arcs);< / div >
< div class = "line" > < a name = "l00067" > < / a > < span class = "lineno" > 67< / span >   underlying_graph_-> AddNode(source);< / div >
< div class = "line" > < a name = "l00068" > < / a > < span class = "lineno" > 68< / span >   underlying_graph_-> AddNode(sink);< / div >
< div class = "line" > < a name = "l00069" > < / a > < span class = "lineno" > 69< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > arc = 0; arc < num_arcs; ++arc) {< / div >
< div class = "line" > < a name = "l00070" > < / a > < span class = "lineno" > 70< / span >   underlying_graph_-> AddArc(arc_tail_[arc], arc_head_[arc]);< / div >
< div class = "line" > < a name = "l00071" > < / a > < span class = "lineno" > 71< / span >   }< / div >
< div class = "line" > < a name = "l00072" > < / a > < span class = "lineno" > 72< / span >   underlying_graph_-> Build(& arc_permutation_);< / div >
< div class = "line" > < a name = "l00073" > < / a > < span class = "lineno" > 73< / span >   underlying_max_flow_ = absl::make_unique< GenericMaxFlow< Graph> > (< / div >
< div class = "line" > < a name = "l00074" > < / a > < span class = "lineno" > 74< / span >   underlying_graph_.get(), source, sink);< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00075" > < / a > < span class = "lineno" > 75< / 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 = "l00076" > < / a > < span class = "lineno" > 76< / span >   < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > permuted_arc =< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00077" > < / a > < span class = "lineno" > 77< / span >   arc < arc_permutation_.size() ? arc_permutation_[arc] : arc;< / div >
< div class = "line" > < a name = "l00078" > < / a > < span class = "lineno" > 78< / span >   underlying_max_flow_-> SetArcCapacity(permuted_arc, arc_capacity_[arc]);< / div >
< div class = "line" > < a name = "l00079" > < / a > < span class = "lineno" > 79< / span >   }< / div >
< div class = "line" > < a name = "l00080" > < / a > < span class = "lineno" > 80< / span >   < span class = "keywordflow" > if< / span > (underlying_max_flow_-> Solve()) {< / div >
< div class = "line" > < a name = "l00081" > < / a > < span class = "lineno" > 81< / span >   optimal_flow_ = underlying_max_flow_-> GetOptimalFlow();< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00082" > < / a > < span class = "lineno" > 82< / 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 = "l00083" > < / a > < span class = "lineno" > 83< / span >   < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > permuted_arc =< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00084" > < / a > < span class = "lineno" > 84< / span >   arc < arc_permutation_.size() ? arc_permutation_[arc] : arc;< / div >
< div class = "line" > < a name = "l00085" > < / a > < span class = "lineno" > 85< / span >   arc_flow_[arc] = underlying_max_flow_-> Flow(permuted_arc);< / 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 >   < span class = "comment" > // Translate the GenericMaxFlow::Status. It is different because NOT_SOLVED< / span > < / div >
< div class = "line" > < a name = "l00089" > < / a > < span class = "lineno" > 89< / span >   < span class = "comment" > // does not make sense in the simple api.< / span > < / div >
< div class = "line" > < a name = "l00090" > < / a > < span class = "lineno" > 90< / span >   < span class = "keywordflow" > switch< / span > (underlying_max_flow_-> status()) {< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00091" > < / a > < span class = "lineno" > 91< / span >   < span class = "keywordflow" > case< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html" > GenericMaxFlow< Graph> ::NOT_SOLVED< / a > :< / div >
< div class = "line" > < a name = "l00092" > < / a > < span class = "lineno" > 92< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "classoperations__research_1_1_simple_max_flow.html#a67a0db04d321a74b7e7fcfd3f1a3f70bac76ecfd837bdc6d4150bb02c403356e4" > BAD_RESULT< / a > ;< / div >
< div class = "line" > < a name = "l00093" > < / a > < span class = "lineno" > 93< / span >   < span class = "keywordflow" > case< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html" > GenericMaxFlow< Graph> ::OPTIMAL< / a > :< / div >
< div class = "line" > < a name = "l00094" > < / a > < span class = "lineno" > 94< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "classoperations__research_1_1_simple_max_flow.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba2579881e7c83261bc21bafb5a5c92cad" > OPTIMAL< / a > ;< / div >
< div class = "line" > < a name = "l00095" > < / a > < span class = "lineno" > 95< / span >   < span class = "keywordflow" > case< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html" > GenericMaxFlow< Graph> ::INT_OVERFLOW< / a > :< / div >
< div class = "line" > < a name = "l00096" > < / a > < span class = "lineno" > 96< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "classoperations__research_1_1_simple_max_flow.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba63e6c2750d99f3c548e6a08bb6822fe2" > POSSIBLE_OVERFLOW< / a > ;< / div >
< div class = "line" > < a name = "l00097" > < / a > < span class = "lineno" > 97< / span >   < span class = "keywordflow" > case< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html" > GenericMaxFlow< Graph> ::BAD_INPUT< / a > :< / div >
< div class = "line" > < a name = "l00098" > < / a > < span class = "lineno" > 98< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "classoperations__research_1_1_simple_max_flow.html#a67a0db04d321a74b7e7fcfd3f1a3f70bac2811be86dd03c6735e3b0db51ad914f" > BAD_INPUT< / a > ;< / div >
< div class = "line" > < a name = "l00099" > < / a > < span class = "lineno" > 99< / span >   < span class = "keywordflow" > case< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html" > GenericMaxFlow< Graph> ::BAD_RESULT< / a > :< / div >
< div class = "line" > < a name = "l00100" > < / a > < span class = "lineno" > 100< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "classoperations__research_1_1_simple_max_flow.html#a67a0db04d321a74b7e7fcfd3f1a3f70bac76ecfd837bdc6d4150bb02c403356e4" > BAD_RESULT< / a > ;< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00101" > < / a > < span class = "lineno" > 101< / span >   }< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00102" > < / a > < span class = "lineno" > 102< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "classoperations__research_1_1_simple_max_flow.html#a67a0db04d321a74b7e7fcfd3f1a3f70bac76ecfd837bdc6d4150bb02c403356e4" > BAD_RESULT< / a > ;< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00103" > < / a > < span class = "lineno" > 103< / span >   }< / div >
< div class = "line" > < a name = "l00104" > < / a > < span class = "lineno" > 104< / span >   < / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00105" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_simple_max_flow.html#a865dfd15177ea8b4cd75a34ab9cee1b1" > 105< / a > < / span >   < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > < a class = "code" href = "classoperations__research_1_1_simple_max_flow.html#a865dfd15177ea8b4cd75a34ab9cee1b1" > SimpleMaxFlow::OptimalFlow< / a > ()< span class = "keyword" > const < / span > { < span class = "keywordflow" > return< / span > optimal_flow_; }< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00106" > < / a > < span class = "lineno" > 106< / span >   < / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00107" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_simple_max_flow.html#a2a420ad8221c326064736ccf148d2f93" > 107< / a > < / span >   < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > < a class = "code" href = "classoperations__research_1_1_simple_max_flow.html#a2a420ad8221c326064736ccf148d2f93" > SimpleMaxFlow::Flow< / a > (< a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc)< span class = "keyword" > const < / span > { < span class = "keywordflow" > return< / span > arc_flow_[arc]; }< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00108" > < / a > < span class = "lineno" > 108< / span >   < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00109" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_simple_max_flow.html#a4ede8a987bfe0972a51942bbca22d4c1" > 109< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "classoperations__research_1_1_simple_max_flow.html#a4ede8a987bfe0972a51942bbca22d4c1" > SimpleMaxFlow::GetSourceSideMinCut< / a > (std::vector< NodeIndex> * result) {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00110" > < / a > < span class = "lineno" > 110< / span >   < span class = "keywordflow" > if< / span > (underlying_max_flow_ == < span class = "keyword" > nullptr< / span > ) < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a name = "l00111" > < / a > < span class = "lineno" > 111< / span >   underlying_max_flow_-> GetSourceSideMinCut(result);< / div >
< div class = "line" > < a name = "l00112" > < / a > < span class = "lineno" > 112< / span >   }< / div >
< div class = "line" > < a name = "l00113" > < / a > < span class = "lineno" > 113< / span >   < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00114" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_simple_max_flow.html#ad8ca9f0f372e03f5cf3af1e163230792" > 114< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "classoperations__research_1_1_simple_max_flow.html#ad8ca9f0f372e03f5cf3af1e163230792" > SimpleMaxFlow::GetSinkSideMinCut< / a > (std::vector< NodeIndex> * result) {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00115" > < / a > < span class = "lineno" > 115< / span >   < span class = "keywordflow" > if< / span > (underlying_max_flow_ == < span class = "keyword" > nullptr< / span > ) < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a name = "l00116" > < / a > < span class = "lineno" > 116< / span >   underlying_max_flow_-> GetSinkSideMinCut(result);< / div >
< div class = "line" > < a name = "l00117" > < / a > < span class = "lineno" > 117< / span >   }< / div >
< div class = "line" > < a name = "l00118" > < / a > < span class = "lineno" > 118< / span >   < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00119" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_simple_max_flow.html#a4d39b4f2db0792ccce2a922c74f43ecf" > 119< / a > < / span >   FlowModel < a class = "code" href = "classoperations__research_1_1_simple_max_flow.html#a4d39b4f2db0792ccce2a922c74f43ecf" > SimpleMaxFlow::CreateFlowModelOfLastSolve< / a > () {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00120" > < / a > < span class = "lineno" > 120< / span >   < span class = "keywordflow" > if< / span > (underlying_max_flow_ == < span class = "keyword" > nullptr< / span > ) < span class = "keywordflow" > return< / span > FlowModel();< / div >
< div class = "line" > < a name = "l00121" > < / a > < span class = "lineno" > 121< / span >   < span class = "keywordflow" > return< / span > underlying_max_flow_-> CreateFlowModel();< / div >
< div class = "line" > < a name = "l00122" > < / a > < span class = "lineno" > 122< / span >   }< / div >
< div class = "line" > < a name = "l00123" > < / a > < span class = "lineno" > 123< / span >   < / div >
< div class = "line" > < a name = "l00124" > < / a > < span class = "lineno" > 124< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph> < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00125" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#acef9fcefb0d5124677a8a9b460c30410" > 125< / a > < / span >   < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#acef9fcefb0d5124677a8a9b460c30410" > GenericMaxFlow< Graph> ::GenericMaxFlow< / a > (< span class = "keyword" > const< / span > < a class = "code" href = "namespaceutil.html#a2f76166dbe0c4055a1f256235ad00478" > Graph< / a > * graph, < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > source,< / div >
< div class = "line" > < a name = "l00126" > < / a > < span class = "lineno" > 126< / span >   < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > sink)< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00127" > < / a > < span class = "lineno" > 127< / span >   : graph_(graph),< / div >
< div class = "line" > < a name = "l00128" > < / a > < span class = "lineno" > 128< / span >   node_excess_(),< / div >
< div class = "line" > < a name = "l00129" > < / a > < span class = "lineno" > 129< / span >   node_potential_(),< / div >
< div class = "line" > < a name = "l00130" > < / a > < span class = "lineno" > 130< / span >   residual_arc_capacity_(),< / div >
< div class = "line" > < a name = "l00131" > < / a > < span class = "lineno" > 131< / span >   first_admissible_arc_(),< / div >
< div class = "line" > < a name = "l00132" > < / a > < span class = "lineno" > 132< / span >   active_nodes_(),< / div >
< div class = "line" > < a name = "l00133" > < / a > < span class = "lineno" > 133< / span >   source_(source),< / div >
< div class = "line" > < a name = "l00134" > < / a > < span class = "lineno" > 134< / span >   sink_(sink),< / div >
< div class = "line" > < a name = "l00135" > < / a > < span class = "lineno" > 135< / span >   use_global_update_(true),< / div >
< div class = "line" > < a name = "l00136" > < / a > < span class = "lineno" > 136< / span >   use_two_phase_algorithm_(true),< / div >
< div class = "line" > < a name = "l00137" > < / a > < span class = "lineno" > 137< / span >   process_node_by_height_(true),< / div >
< div class = "line" > < a name = "l00138" > < / a > < span class = "lineno" > 138< / span >   check_input_(true),< / div >
< div class = "line" > < a name = "l00139" > < / a > < span class = "lineno" > 139< / span >   check_result_(true),< / div >
< div class = "line" > < a name = "l00140" > < / a > < span class = "lineno" > 140< / span >   stats_(< span class = "stringliteral" > " MaxFlow" < / span > ) {< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00141" > < / a > < span class = "lineno" > 141< / span >   < a class = "code" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a7c6fc06ca542eed0ff0b6ed4b1ecbcda" > stats_< / a > );< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00142" > < / a > < span class = "lineno" > 142< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a10bcb8f7f63b390821ae5e95fe4822cc" > graph< / a > -> IsNodeValid(source));< / div >
< div class = "line" > < a name = "l00143" > < / a > < span class = "lineno" > 143< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a10bcb8f7f63b390821ae5e95fe4822cc" > graph< / a > -> IsNodeValid(sink));< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00144" > < / a > < span class = "lineno" > 144< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > max_num_nodes = < a class = "code" href = "structoperations__research_1_1_graphs.html#a9d530d16efbea1a29d61cb0325980a50" > Graphs< Graph> ::NodeReservation< / a > (*< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#ad88eea96f82ba29e252f3e07cdb84378" > graph_< / a > );< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00145" > < / a > < span class = "lineno" > 145< / span >   < span class = "keywordflow" > if< / span > (max_num_nodes > 0) {< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00146" > < / a > < span class = "lineno" > 146< / span >   < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#af63274e5211be9578b29f56f29936964" > node_excess_< / a > .< 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 = "l00147" > < / a > < span class = "lineno" > 147< / span >   < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#af63274e5211be9578b29f56f29936964" > node_excess_< / a > .< 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 = "l00148" > < / a > < span class = "lineno" > 148< / span >   < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a5b7429be4ec8b98658d0b035261b1483" > node_potential_< / a > .< 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 = "l00149" > < / a > < span class = "lineno" > 149< / span >   < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a5b7429be4ec8b98658d0b035261b1483" > node_potential_< / a > .< 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 = "l00150" > < / a > < span class = "lineno" > 150< / span >   < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a3702055ec6affa60e6862cd0e63f9a7b" > first_admissible_arc_< / a > .< 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 = "l00151" > < / a > < span class = "lineno" > 151< / span >   < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a3702055ec6affa60e6862cd0e63f9a7b" > first_admissible_arc_< / a > .< a class = "code" href = "classoperations__research_1_1_z_vector.html#ad5721f29af64d2e2ae014ead96192591" > SetAll< / a > (Graph::kNilArc);< / div >
< div class = "line" > < a name = "l00152" > < / a > < span class = "lineno" > 152< / span >   < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a2b834b1bfbaef46bbf4a3f991a26f9a3" > bfs_queue_< / a > .reserve(max_num_nodes);< / div >
< div class = "line" > < a name = "l00153" > < / a > < span class = "lineno" > 153< / span >   < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a19193cb3045a42a4154d3860b92dc65b" > active_nodes_< / a > .reserve(max_num_nodes);< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00154" > < / a > < span class = "lineno" > 154< / span >   }< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00155" > < / a > < span class = "lineno" > 155< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > max_num_arcs = < a class = "code" href = "structoperations__research_1_1_graphs.html#a42fb6857e088a176a53232b910715260" > Graphs< Graph> ::ArcReservation< / a > (*< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#ad88eea96f82ba29e252f3e07cdb84378" > graph_< / a > );< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00156" > < / a > < span class = "lineno" > 156< / span >   < span class = "keywordflow" > if< / span > (max_num_arcs > 0) {< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00157" > < / a > < span class = "lineno" > 157< / span >   < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#ab478e83cea51fd1e9656030ea4667286" > residual_arc_capacity_< / a > .< a class = "code" href = "classoperations__research_1_1_z_vector.html#a6d0d87121f91870c74db35aa4edfdc69" > Reserve< / a > (-max_num_arcs, max_num_arcs - 1);< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00158" > < / a > < span class = "lineno" > 158< / span >   < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#ab478e83cea51fd1e9656030ea4667286" > residual_arc_capacity_< / a > .< 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 = "l00159" > < / a > < span class = "lineno" > 159< / span >   }< / div >
< div class = "line" > < a name = "l00160" > < / a > < span class = "lineno" > 160< / span >   }< / div >
< div class = "line" > < a name = "l00161" > < / a > < span class = "lineno" > 161< / span >   < / div >
< div class = "line" > < a name = "l00162" > < / a > < span class = "lineno" > 162< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph> < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00163" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#a12ffc143b8d66de80c07572cc8509037" > 163< / a > < / span >   < span class = "keywordtype" > bool< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a12ffc143b8d66de80c07572cc8509037" > GenericMaxFlow< Graph> ::CheckInputConsistency< / a > ()< span class = "keyword" > const < / span > {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00164" > < / a > < span class = "lineno" > 164< / span >   < a class = "code" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a name = "l00165" > < / a > < span class = "lineno" > 165< / span >   < span class = "keywordtype" > bool< / span > ok = < span class = "keyword" > true< / span > ;< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00166" > < / a > < span class = "lineno" > 166< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > arc = 0; arc < graph_-> num_arcs(); ++arc) {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00167" > < / a > < span class = "lineno" > 167< / span >   < span class = "keywordflow" > if< / span > (residual_arc_capacity_[arc] < 0) {< / div >
< div class = "line" > < a name = "l00168" > < / a > < span class = "lineno" > 168< / span >   ok = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00169" > < / a > < span class = "lineno" > 169< / span >   }< / 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 >   < span class = "keywordflow" > return< / span > ok;< / div >
< div class = "line" > < a name = "l00172" > < / a > < span class = "lineno" > 172< / span >   }< / div >
< div class = "line" > < a name = "l00173" > < / a > < span class = "lineno" > 173< / span >   < / div >
< div class = "line" > < a name = "l00174" > < / a > < span class = "lineno" > 174< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph> < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00175" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#a21776d0248204801a49c42b46902c1a1" > 175< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a21776d0248204801a49c42b46902c1a1" > GenericMaxFlow< Graph> ::SetArcCapacity< / a > (< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > arc,< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00176" > < / a > < span class = "lineno" > 176< / span >   < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > new_capacity) {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00177" > < / a > < span class = "lineno" > 177< / span >   < a class = "code" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00178" > < / a > < span class = "lineno" > 178< / span >   < a class = "code" href = "base_2logging_8h.html#a4395e95bab44e222cb2e77251017a0e2" > DCHECK_LE< / a > (0, new_capacity);< / div >
< div class = "line" > < a name = "l00179" > < / a > < span class = "lineno" > 179< / 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 = "l00180" > < / a > < span class = "lineno" > 180< / 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 = "l00181" > < / a > < span class = "lineno" > 181< / 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 = "l00182" > < / a > < span class = "lineno" > 182< / span >   < span class = "keywordflow" > if< / span > (capacity_delta == 0) {< / div >
< div class = "line" > < a name = "l00183" > < / a > < span class = "lineno" > 183< / span >   < span class = "keywordflow" > return< / span > ; < span class = "comment" > // Nothing to do.< / 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 >   status_ = NOT_SOLVED;< / div >
< div class = "line" > < a name = "l00186" > < / a > < span class = "lineno" > 186< / span >   < span class = "keywordflow" > if< / span > (free_capacity + capacity_delta > = 0) {< / div >
< div class = "line" > < a name = "l00187" > < / a > < span class = "lineno" > 187< / span >   < span class = "comment" > // The above condition is true if one of the two conditions is true:< / span > < / div >
< div class = "line" > < a name = "l00188" > < / a > < span class = "lineno" > 188< / span >   < span class = "comment" > // 1/ (capacity_delta > 0), meaning we are increasing the capacity< / span > < / div >
< div class = "line" > < a name = "l00189" > < / a > < span class = "lineno" > 189< / span >   < span class = "comment" > // 2/ (capacity_delta < 0 & & free_capacity + capacity_delta > = 0)< / span > < / div >
< div class = "line" > < a name = "l00190" > < / a > < span class = "lineno" > 190< / span >   < span class = "comment" > // meaning we are reducing the capacity, but that the capacity< / span > < / div >
< div class = "line" > < a name = "l00191" > < / a > < span class = "lineno" > 191< / 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 = "l00192" > < / a > < span class = "lineno" > 192< / 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 = "l00193" > < / a > < span class = "lineno" > 193< / span >   (capacity_delta < 0 & & free_capacity + capacity_delta > = 0));< / div >
< div class = "line" > < a name = "l00194" > < / a > < span class = "lineno" > 194< / span >   residual_arc_capacity_.Set(arc, free_capacity + capacity_delta);< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00195" > < / a > < span class = "lineno" > 195< / 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 = "l00196" > < / a > < span class = "lineno" > 196< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00197" > < / a > < span class = "lineno" > 197< / span >   < span class = "comment" > // Note that this breaks the preflow invariants but it is currently not an< / span > < / div >
< div class = "line" > < a name = "l00198" > < / a > < span class = "lineno" > 198< / span >   < span class = "comment" > // issue since we restart from scratch on each Solve() and we set the status< / span > < / div >
< div class = "line" > < a name = "l00199" > < / a > < span class = "lineno" > 199< / span >   < span class = "comment" > // to NOT_SOLVED.< / span > < / div >
< div class = "line" > < a name = "l00200" > < / a > < span class = "lineno" > 200< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00201" > < / a > < span class = "lineno" > 201< / span >   < span class = "comment" > // TODO(user): The easiest is probably to allow negative node excess in< / span > < / div >
< div class = "line" > < a name = "l00202" > < / a > < span class = "lineno" > 202< / span >   < span class = "comment" > // other places than the source, but the current implementation does not< / span > < / div >
< div class = "line" > < a name = "l00203" > < / a > < span class = "lineno" > 203< / span >   < span class = "comment" > // deal with this.< / span > < / div >
< div class = "line" > < a name = "l00204" > < / a > < span class = "lineno" > 204< / span >   SetCapacityAndClearFlow(arc, new_capacity);< / div >
< div class = "line" > < a name = "l00205" > < / a > < span class = "lineno" > 205< / span >   }< / div >
< div class = "line" > < a name = "l00206" > < / a > < span class = "lineno" > 206< / 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 = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph> < / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00209" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#a38f480b60f3812345680d2267770ee5c" > 209< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a38f480b60f3812345680d2267770ee5c" > GenericMaxFlow< Graph> ::SetArcFlow< / a > (< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > arc, < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > new_flow) {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00210" > < / a > < span class = "lineno" > 210< / span >   < a class = "code" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00211" > < / a > < span class = "lineno" > 211< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (IsArcValid(arc));< / div >
< div class = "line" > < a name = "l00212" > < / a > < span class = "lineno" > 212< / span >   < a class = "code" href = "base_2logging_8h.html#aae2dc65d9ea248d54bf39daa986dd295" > DCHECK_GE< / a > (new_flow, 0);< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00213" > < / a > < span class = "lineno" > 213< / 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 = "l00214" > < / a > < span class = "lineno" > 214< / 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 = "l00215" > < / a > < span class = "lineno" > 215< / span >   < / div >
< div class = "line" > < a name = "l00216" > < / a > < span class = "lineno" > 216< / span >   < span class = "comment" > // Note that this breaks the preflow invariants but it is currently not an< / span > < / div >
< div class = "line" > < a name = "l00217" > < / a > < span class = "lineno" > 217< / span >   < span class = "comment" > // issue since we restart from scratch on each Solve() and we set the status< / span > < / div >
< div class = "line" > < a name = "l00218" > < / a > < span class = "lineno" > 218< / span >   < span class = "comment" > // to NOT_SOLVED.< / span > < / div >
< div class = "line" > < a name = "l00219" > < / a > < span class = "lineno" > 219< / span >   residual_arc_capacity_.Set(Opposite(arc), -new_flow);< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00220" > < / a > < span class = "lineno" > 220< / 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 = "l00221" > < / a > < span class = "lineno" > 221< / span >   status_ = NOT_SOLVED;< / 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 >   < / div >
< div class = "line" > < a name = "l00224" > < / a > < span class = "lineno" > 224< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph> < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00225" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#a4ede8a987bfe0972a51942bbca22d4c1" > 225< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ede8a987bfe0972a51942bbca22d4c1" > GenericMaxFlow< Graph> ::GetSourceSideMinCut< / a > (< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00226" > < / a > < span class = "lineno" > 226< / span >   std::vector< NodeIndex> * result) {< / div >
< div class = "line" > < a name = "l00227" > < / a > < span class = "lineno" > 227< / span >   ComputeReachableNodes< false> (source_, result);< / div >
< div class = "line" > < a name = "l00228" > < / a > < span class = "lineno" > 228< / span >   }< / div >
< div class = "line" > < a name = "l00229" > < / a > < span class = "lineno" > 229< / span >   < / div >
< div class = "line" > < a name = "l00230" > < / a > < span class = "lineno" > 230< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph> < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00231" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#ad8ca9f0f372e03f5cf3af1e163230792" > 231< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#ad8ca9f0f372e03f5cf3af1e163230792" > GenericMaxFlow< Graph> ::GetSinkSideMinCut< / a > (std::vector< NodeIndex> * result) {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00232" > < / a > < span class = "lineno" > 232< / span >   ComputeReachableNodes< true> (sink_, result);< / div >
< div class = "line" > < a name = "l00233" > < / a > < span class = "lineno" > 233< / span >   }< / 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 >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph> < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00236" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#aac87a51b41d88b6976a12007bae9b91d" > 236< / a > < / span >   < span class = "keywordtype" > bool< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#aac87a51b41d88b6976a12007bae9b91d" > GenericMaxFlow< Graph> ::CheckResult< / a > ()< span class = "keyword" > const < / span > {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00237" > < / a > < span class = "lineno" > 237< / span >   < a class = "code" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a name = "l00238" > < / a > < span class = "lineno" > 238< / span >   < span class = "keywordtype" > bool< / span > ok = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00239" > < / a > < span class = "lineno" > 239< / span >   < span class = "keywordflow" > if< / span > (node_excess_[source_] != -node_excess_[sink_]) {< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00240" > < / a > < span class = "lineno" > 240< / span >   < a class = "code" href = "base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae" > LOG< / a > (DFATAL) < < < span class = "stringliteral" > " -node_excess_[source_] = " < / span > < < -node_excess_[source_]< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00241" > < / a > < span class = "lineno" > 241< / span >   < < < span class = "stringliteral" > " != node_excess_[sink_] = " < / span > < < node_excess_[sink_];< / div >
< div class = "line" > < a name = "l00242" > < / a > < span class = "lineno" > 242< / span >   ok = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00243" > < / a > < span class = "lineno" > 243< / span >   }< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00244" > < / a > < span class = "lineno" > 244< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > node = 0; node < graph_-> num_nodes(); ++node) {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00245" > < / a > < span class = "lineno" > 245< / span >   < span class = "keywordflow" > if< / span > (node != source_ & & node != sink_) {< / div >
< div class = "line" > < a name = "l00246" > < / a > < span class = "lineno" > 246< / span >   < span class = "keywordflow" > if< / span > (node_excess_[node] != 0) {< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00247" > < / a > < span class = "lineno" > 247< / span >   < a class = "code" href = "base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae" > LOG< / a > (DFATAL) < < < span class = "stringliteral" > " node_excess_[" < / span > < < node < < < span class = "stringliteral" > " ] = " < / span > < < node_excess_[node]< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00248" > < / a > < span class = "lineno" > 248< / span >   < < < span class = "stringliteral" > " != 0" < / span > ;< / div >
< div class = "line" > < a name = "l00249" > < / a > < span class = "lineno" > 249< / span >   ok = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00250" > < / a > < span class = "lineno" > 250< / span >   }< / div >
< div class = "line" > < a name = "l00251" > < / a > < span class = "lineno" > 251< / span >   }< / div >
< div class = "line" > < a name = "l00252" > < / a > < span class = "lineno" > 252< / span >   }< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00253" > < / a > < span class = "lineno" > 253< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > arc = 0; arc < graph_-> num_arcs(); ++arc) {< / div >
< div class = "line" > < a name = "l00254" > < / a > < span class = "lineno" > 254< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > opposite = Opposite(arc);< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00255" > < / a > < span class = "lineno" > 255< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > direct_capacity = residual_arc_capacity_[arc];< / div >
< div class = "line" > < a name = "l00256" > < / a > < span class = "lineno" > 256< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > opposite_capacity = residual_arc_capacity_[opposite];< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00257" > < / a > < span class = "lineno" > 257< / span >   < span class = "keywordflow" > if< / span > (direct_capacity < 0) {< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00258" > < / a > < span class = "lineno" > 258< / span >   < a class = "code" href = "base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae" > LOG< / a > (DFATAL) < < < span class = "stringliteral" > " residual_arc_capacity_[" < / span > < < arc< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00259" > < / a > < span class = "lineno" > 259< / span >   < < < span class = "stringliteral" > " ] = " < / span > < < direct_capacity < < < span class = "stringliteral" > " < 0" < / span > ;< / div >
< div class = "line" > < a name = "l00260" > < / a > < span class = "lineno" > 260< / span >   ok = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00261" > < / a > < span class = "lineno" > 261< / span >   }< / div >
< div class = "line" > < a name = "l00262" > < / a > < span class = "lineno" > 262< / span >   < span class = "keywordflow" > if< / span > (opposite_capacity < 0) {< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00263" > < / a > < span class = "lineno" > 263< / span >   < a class = "code" href = "base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae" > LOG< / a > (DFATAL) < < < span class = "stringliteral" > " residual_arc_capacity_[" < / span > < < opposite< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00264" > < / a > < span class = "lineno" > 264< / span >   < < < span class = "stringliteral" > " ] = " < / span > < < opposite_capacity < < < span class = "stringliteral" > " < 0" < / span > ;< / div >
< div class = "line" > < a name = "l00265" > < / a > < span class = "lineno" > 265< / span >   ok = < span class = "keyword" > false< / 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 = "comment" > // The initial capacity of the direct arcs is non-negative.< / span > < / div >
< div class = "line" > < a name = "l00268" > < / a > < span class = "lineno" > 268< / span >   < span class = "keywordflow" > if< / span > (direct_capacity + opposite_capacity < 0) {< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00269" > < / a > < span class = "lineno" > 269< / span >   < a class = "code" href = "base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae" > LOG< / a > (DFATAL) < < < span class = "stringliteral" > " initial capacity [" < / span > < < arc< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00270" > < / a > < span class = "lineno" > 270< / span >   < < < span class = "stringliteral" > " ] = " < / span > < < direct_capacity + opposite_capacity < < < span class = "stringliteral" > " < 0" < / span > ;< / div >
< div class = "line" > < a name = "l00271" > < / a > < span class = "lineno" > 271< / span >   ok = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00272" > < / a > < span class = "lineno" > 272< / span >   }< / div >
< div class = "line" > < a name = "l00273" > < / a > < span class = "lineno" > 273< / span >   }< / div >
< div class = "line" > < a name = "l00274" > < / a > < span class = "lineno" > 274< / span >   < span class = "keywordflow" > return< / span > ok;< / div >
< div class = "line" > < a name = "l00275" > < / a > < span class = "lineno" > 275< / span >   }< / div >
< div class = "line" > < a name = "l00276" > < / a > < span class = "lineno" > 276< / span >   < / div >
< div class = "line" > < a name = "l00277" > < / a > < span class = "lineno" > 277< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph> < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00278" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#ad3f0f2aad2e5ba39481e3aad8de1fcda" > 278< / a > < / span >   < span class = "keywordtype" > bool< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#ad3f0f2aad2e5ba39481e3aad8de1fcda" > GenericMaxFlow< Graph> ::AugmentingPathExists< / a > ()< span class = "keyword" > const < / span > {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00279" > < / a > < span class = "lineno" > 279< / span >   < a class = "code" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a name = "l00280" > < / a > < span class = "lineno" > 280< / span >   < / div >
< div class = "line" > < a name = "l00281" > < / a > < span class = "lineno" > 281< / span >   < span class = "comment" > // We simply compute the reachability from the source in the residual graph.< / span > < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00282" > < / a > < span class = "lineno" > 282< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > num_nodes = graph_-> num_nodes();< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00283" > < / a > < span class = "lineno" > 283< / span >   std::vector< bool> is_reached(num_nodes, < span class = "keyword" > false< / span > );< / div >
< div class = "line" > < a name = "l00284" > < / a > < span class = "lineno" > 284< / span >   std::vector< NodeIndex> to_process;< / div >
< div class = "line" > < a name = "l00285" > < / a > < span class = "lineno" > 285< / span >   < / div >
< div class = "line" > < a name = "l00286" > < / a > < span class = "lineno" > 286< / span >   to_process.push_back(source_);< / div >
< div class = "line" > < a name = "l00287" > < / a > < span class = "lineno" > 287< / span >   is_reached[source_] = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00288" > < / a > < span class = "lineno" > 288< / span >   < span class = "keywordflow" > while< / span > (!to_process.empty()) {< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00289" > < / a > < span class = "lineno" > 289< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > node = to_process.back();< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00290" > < / a > < span class = "lineno" > 290< / span >   to_process.pop_back();< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00291" > < / a > < span class = "lineno" > 291< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a277838ded7171a604a67babdbea05988" > OutgoingOrOppositeIncomingArcIterator< / a > it(*graph_, node); it.Ok();< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00292" > < / a > < span class = "lineno" > 292< / span >   it.Next()) {< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00293" > < / a > < span class = "lineno" > 293< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > arc = it.Index();< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00294" > < / a > < span class = "lineno" > 294< / span >   < span class = "keywordflow" > if< / span > (residual_arc_capacity_[arc] > 0) {< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00295" > < / a > < span class = "lineno" > 295< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > < a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > = graph_-> Head(arc);< / div >
< div class = "line" > < a name = "l00296" > < / a > < span class = "lineno" > 296< / span >   < span class = "keywordflow" > if< / span > (!is_reached[< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ]) {< / div >
< div class = "line" > < a name = "l00297" > < / a > < span class = "lineno" > 297< / span >   is_reached[< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ] = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00298" > < / a > < span class = "lineno" > 298< / span >   to_process.push_back(< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > );< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00299" > < / a > < span class = "lineno" > 299< / span >   }< / div >
< div class = "line" > < a name = "l00300" > < / a > < span class = "lineno" > 300< / span >   }< / div >
< div class = "line" > < a name = "l00301" > < / a > < span class = "lineno" > 301< / span >   }< / div >
< div class = "line" > < a name = "l00302" > < / a > < span class = "lineno" > 302< / span >   }< / div >
< div class = "line" > < a name = "l00303" > < / a > < span class = "lineno" > 303< / span >   < span class = "keywordflow" > return< / span > is_reached[sink_];< / div >
< div class = "line" > < a name = "l00304" > < / a > < span class = "lineno" > 304< / span >   }< / div >
< div class = "line" > < a name = "l00305" > < / a > < span class = "lineno" > 305< / span >   < / div >
< div class = "line" > < a name = "l00306" > < / a > < span class = "lineno" > 306< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph> < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00307" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#a2a555ba2dc0a468e6fee4a0665b12272" > 307< / a > < / span >   < span class = "keywordtype" > bool< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a2a555ba2dc0a468e6fee4a0665b12272" > GenericMaxFlow< Graph> ::CheckRelabelPrecondition< / a > (< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > node)< span class = "keyword" > const < / span > {< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00308" > < / a > < span class = "lineno" > 308< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (IsActive(node));< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00309" > < / a > < span class = "lineno" > 309< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a277838ded7171a604a67babdbea05988" > OutgoingOrOppositeIncomingArcIterator< / a > it(*graph_, node); it.Ok();< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00310" > < / a > < span class = "lineno" > 310< / span >   it.Next()) {< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00311" > < / a > < span class = "lineno" > 311< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > arc = it.Index();< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00312" > < / a > < span class = "lineno" > 312< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (!IsAdmissible(arc)) < < DebugString(< span class = "stringliteral" > " CheckRelabelPrecondition:" < / span > , arc);< / div >
2020-09-02 09:42:51 +02:00
< 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 >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00315" > < / a > < span class = "lineno" > 315< / span >   }< / div >
< div class = "line" > < a name = "l00316" > < / a > < span class = "lineno" > 316< / span >   < / div >
< div class = "line" > < a name = "l00317" > < / a > < span class = "lineno" > 317< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph> < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00318" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#a2212ce00ee245370c5cb71234244027a" > 318< / a > < / span >   std::string < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a2212ce00ee245370c5cb71234244027a" > GenericMaxFlow< Graph> ::DebugString< / a > (< span class = "keyword" > const< / span > std::string& < a class = "code" href = "gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6" > context< / a > ,< / div >
< div class = "line" > < a name = "l00319" > < / a > < span class = "lineno" > 319< / span >   < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > arc)< span class = "keyword" > const < / span > {< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00320" > < / a > < span class = "lineno" > 320< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > < a class = "code" href = "routing__flow_8cc.html#a64e7efc5529154ba56903e75f5300990" > tail< / a > = Tail(arc);< / div >
< div class = "line" > < a name = "l00321" > < / a > < span class = "lineno" > 321< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > < a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > = Head(arc);< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00322" > < / a > < span class = "lineno" > 322< / span >   < span class = "keywordflow" > return< / span > absl::StrFormat(< / div >
< div class = "line" > < a name = "l00323" > < / a > < span class = "lineno" > 323< / span >   < span class = "stringliteral" > " %s Arc %d, from %d to %d, " < / span > < / div >
< div class = "line" > < a name = "l00324" > < / a > < span class = "lineno" > 324< / span >   < span class = "stringliteral" > " Capacity = %d, Residual capacity = %d, " < / span > < / div >
< div class = "line" > < a name = "l00325" > < / a > < span class = "lineno" > 325< / span >   < span class = "stringliteral" > " Flow = residual capacity for reverse arc = %d, " < / span > < / div >
< div class = "line" > < a name = "l00326" > < / a > < span class = "lineno" > 326< / span >   < span class = "stringliteral" > " Height(tail) = %d, Height(head) = %d, " < / span > < / div >
< div class = "line" > < a name = "l00327" > < / a > < span class = "lineno" > 327< / span >   < span class = "stringliteral" > " Excess(tail) = %d, Excess(head) = %d" < / span > ,< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00328" > < / a > < span class = "lineno" > 328< / 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), residual_arc_capacity_[arc],< / div >
< div class = "line" > < a name = "l00329" > < / a > < span class = "lineno" > 329< / span >   Flow(arc), 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 = "l00330" > < / a > < span class = "lineno" > 330< / span >   node_excess_[< a class = "code" href = "routing__flow_8cc.html#a64e7efc5529154ba56903e75f5300990" > tail< / a > ], node_excess_[< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ]);< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00331" > < / a > < span class = "lineno" > 331< / span >   }< / div >
< div class = "line" > < a name = "l00332" > < / a > < span class = "lineno" > 332< / span >   < / div >
< div class = "line" > < a name = "l00333" > < / a > < span class = "lineno" > 333< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph> < / div >
2021-01-26 11:28:50 +01:00
< div class = "line" > < a name = "l00334" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#acef9fcefb0d5124677a8a9b460c30410" > 334< / a > < / span >   < span class = "keywordtype" > bool< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a942f29030f08426e7e318204e987e2f7" > GenericMaxFlow< Graph> ::Solve< / a > () {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00335" > < / a > < span class = "lineno" > 335< / span >   status_ = NOT_SOLVED;< / div >
< div class = "line" > < a name = "l00336" > < / a > < span class = "lineno" > 336< / span >   < span class = "keywordflow" > if< / span > (check_input_ & & !CheckInputConsistency()) {< / div >
< div class = "line" > < a name = "l00337" > < / a > < span class = "lineno" > 337< / span >   status_ = BAD_INPUT;< / div >
< div class = "line" > < a name = "l00338" > < / a > < span class = "lineno" > 338< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00339" > < / a > < span class = "lineno" > 339< / span >   }< / div >
< div class = "line" > < a name = "l00340" > < / a > < span class = "lineno" > 340< / span >   InitializePreflow();< / div >
< div class = "line" > < a name = "l00341" > < / a > < span class = "lineno" > 341< / span >   < / div >
< div class = "line" > < a name = "l00342" > < / a > < span class = "lineno" > 342< / span >   < span class = "comment" > // Deal with the case when source_ or sink_ is not inside graph_.< / span > < / div >
< div class = "line" > < a name = "l00343" > < / a > < span class = "lineno" > 343< / span >   < span class = "comment" > // Since they are both specified independently of the graph, we do need to< / span > < / div >
< div class = "line" > < a name = "l00344" > < / a > < span class = "lineno" > 344< / span >   < span class = "comment" > // take care of this corner case.< / span > < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00345" > < / a > < span class = "lineno" > 345< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > num_nodes = graph_-> num_nodes();< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00346" > < / a > < span class = "lineno" > 346< / span >   < span class = "keywordflow" > if< / span > (sink_ > = num_nodes || source_ > = num_nodes) {< / div >
< div class = "line" > < a name = "l00347" > < / a > < span class = "lineno" > 347< / span >   < span class = "comment" > // Behave like a normal graph where source_ and sink_ are disconnected.< / span > < / div >
< div class = "line" > < a name = "l00348" > < / a > < span class = "lineno" > 348< / span >   < span class = "comment" > // Note that the arc flow is set to 0 by InitializePreflow().< / span > < / div >
2021-01-26 11:28:50 +01:00
< div class = "line" > < a name = "l00349" > < / a > < span class = "lineno" > 349< / span >   status_ = OPTIMAL;< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00350" > < / a > < span class = "lineno" > 350< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00351" > < / a > < span class = "lineno" > 351< / span >   }< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00352" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#a21776d0248204801a49c42b46902c1a1" > 352< / a > < / span >   < span class = "keywordflow" > if< / span > (use_global_update_) {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00353" > < / a > < span class = "lineno" > 353< / span >   RefineWithGlobalUpdate();< / div >
< div class = "line" > < a name = "l00354" > < / a > < span class = "lineno" > 354< / span >   } < span class = "keywordflow" > else< / span > {< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00355" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#a38f480b60f3812345680d2267770ee5c" > 355< / a > < / span >   Refine();< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00356" > < / a > < span class = "lineno" > 356< / span >   }< / div >
< div class = "line" > < a name = "l00357" > < / a > < span class = "lineno" > 357< / span >   < span class = "keywordflow" > if< / span > (check_result_) {< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00358" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#a942f29030f08426e7e318204e987e2f7" > 358< / a > < / span >   < span class = "keywordflow" > if< / span > (!CheckResult()) {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00359" > < / a > < span class = "lineno" > 359< / span >   status_ = BAD_RESULT;< / div >
< div class = "line" > < a name = "l00360" > < / a > < span class = "lineno" > 360< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00361" > < / a > < span class = "lineno" > 361< / span >   }< / div >
< div class = "line" > < a name = "l00362" > < / a > < span class = "lineno" > 362< / span >   < span class = "keywordflow" > if< / span > (GetOptimalFlow() < kMaxFlowQuantity & & AugmentingPathExists()) {< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00363" > < / a > < span class = "lineno" > 363< / 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" > " The algorithm terminated, but the flow is not maximal!" < / span > ;< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00364" > < / a > < span class = "lineno" > 364< / span >   status_ = BAD_RESULT;< / div >
< div class = "line" > < a name = "l00365" > < / a > < span class = "lineno" > 365< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00366" > < / a > < span class = "lineno" > 366< / span >   }< / div >
< div class = "line" > < a name = "l00367" > < / a > < span class = "lineno" > 367< / span >   }< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00368" > < / a > < span class = "lineno" > 368< / span >   < a class = "code" href = "base_2logging_8h.html#ae89df3243bbb8341130c7b3f44145ea0" > DCHECK_EQ< / a > (node_excess_[sink_], -node_excess_[source_]);< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00369" > < / a > < span class = "lineno" > 369< / span >   status_ = < a class = "code" href = "namespaceoperations__research_1_1data_1_1vbp.html#a4604191fbd84a43686f44c25d7bd0161a2579881e7c83261bc21bafb5a5c92cad" > OPTIMAL< / a > ;< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00370" > < / a > < span class = "lineno" > 370< / span >   < span class = "keywordflow" > if< / span > (GetOptimalFlow() == kMaxFlowQuantity & & AugmentingPathExists()) {< / div >
< div class = "line" > < a name = "l00371" > < / a > < span class = "lineno" > 371< / span >   < span class = "comment" > // In this case, we are sure that the flow is > kMaxFlowQuantity.< / span > < / div >
< div class = "line" > < a name = "l00372" > < / a > < span class = "lineno" > 372< / span >   status_ = INT_OVERFLOW;< / div >
< div class = "line" > < a name = "l00373" > < / a > < span class = "lineno" > 373< / span >   }< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00374" > < / a > < span class = "lineno" > 374< / 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 >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00375" > < / a > < span class = "lineno" > 375< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00376" > < / a > < span class = "lineno" > 376< / span >   }< / div >
< div class = "line" > < a name = "l00377" > < / a > < span class = "lineno" > 377< / span >   < / div >
< div class = "line" > < a name = "l00378" > < / a > < span class = "lineno" > 378< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph> < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00379" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#a0f81f6e049ffb2b2a27c8e45dc0a25a0" > 379< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a0f81f6e049ffb2b2a27c8e45dc0a25a0" > GenericMaxFlow< Graph> ::InitializePreflow< / a > () {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00380" > < / a > < span class = "lineno" > 380< / span >   < a class = "code" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a name = "l00381" > < / a > < span class = "lineno" > 381< / span >   < span class = "comment" > // InitializePreflow() clears the whole flow that could have been computed< / span > < / div >
< div class = "line" > < a name = "l00382" > < / a > < span class = "lineno" > 382< / span >   < span class = "comment" > // by a previous Solve(). This is not optimal in terms of complexity.< / span > < / div >
< div class = "line" > < a name = "l00383" > < / a > < span class = "lineno" > 383< / span >   < span class = "comment" > // TODO(user): find a way to make the re-solving incremental (not an obvious< / span > < / div >
< div class = "line" > < a name = "l00384" > < / a > < span class = "lineno" > 384< / span >   < span class = "comment" > // task, and there has not been a lot of literature on the subject.)< / span > < / div >
< div class = "line" > < a name = "l00385" > < / a > < span class = "lineno" > 385< / span >   node_excess_.SetAll(0);< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00386" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#a4ede8a987bfe0972a51942bbca22d4c1" > 386< / a > < / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > num_arcs = graph_-> num_arcs();< / div >
< div class = "line" > < a name = "l00387" > < / a > < span class = "lineno" > 387< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > arc = 0; arc < num_arcs; ++arc) {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00388" > < / a > < span class = "lineno" > 388< / span >   SetCapacityAndClearFlow(arc, Capacity(arc));< / 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 >   < / div >
< div class = "line" > < a name = "l00391" > < / a > < span class = "lineno" > 391< / span >   < span class = "comment" > // All the initial heights are zero except for the source whose height is< / span > < / div >
< div class = "line" > < a name = "l00392" > < / a > < span class = "lineno" > 392< / span >   < span class = "comment" > // equal to the number of nodes and will never change during the algorithm.< / span > < / div >
< div class = "line" > < a name = "l00393" > < / a > < span class = "lineno" > 393< / span >   node_potential_.SetAll(0);< / div >
< div class = "line" > < a name = "l00394" > < / a > < span class = "lineno" > 394< / span >   node_potential_.Set(source_, graph_-> num_nodes());< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00395" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#ad8ca9f0f372e03f5cf3af1e163230792" > 395< / a > < / span >   < / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00396" > < / a > < span class = "lineno" > 396< / span >   < span class = "comment" > // Initially no arcs are admissible except maybe the one leaving the source,< / span > < / div >
< div class = "line" > < a name = "l00397" > < / a > < span class = "lineno" > 397< / span >   < span class = "comment" > // but we treat the source in a special way, see< / span > < / div >
< div class = "line" > < a name = "l00398" > < / a > < span class = "lineno" > 398< / span >   < span class = "comment" > // SaturateOutgoingArcsFromSource().< / span > < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00399" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#a12ffc143b8d66de80c07572cc8509037" > 399< / a > < / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > num_nodes = graph_-> num_nodes();< / div >
< div class = "line" > < a name = "l00400" > < / a > < span class = "lineno" > 400< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > node = 0; node < num_nodes; ++node) {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00401" > < / a > < span class = "lineno" > 401< / span >   first_admissible_arc_[node] = Graph::kNilArc;< / 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 >   }< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00404" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#aac87a51b41d88b6976a12007bae9b91d" > 404< / a > < / span >   < / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00405" > < / a > < span class = "lineno" > 405< / span >   < span class = "comment" > // Note(user): Calling this function will break the property on the node< / span > < / div >
< div class = "line" > < a name = "l00406" > < / a > < span class = "lineno" > 406< / span >   < span class = "comment" > // potentials because of the way we cancel flow on cycle. However, we only call< / span > < / div >
< div class = "line" > < a name = "l00407" > < / a > < span class = "lineno" > 407< / span >   < span class = "comment" > // that at the end of the algorithm, or just before a GlobalUpdate() that will< / span > < / div >
< div class = "line" > < a name = "l00408" > < / a > < span class = "lineno" > 408< / span >   < span class = "comment" > // restore the precondition on the node potentials.< / span > < / div >
< div class = "line" > < a name = "l00409" > < / a > < span class = "lineno" > 409< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph> < / div >
2021-01-26 11:28:50 +01:00
< div class = "line" > < a name = "l00410" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#ad3f0f2aad2e5ba39481e3aad8de1fcda" > 410< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a3a4afd902c22768de7955ba9983fb282" > GenericMaxFlow< Graph> ::PushFlowExcessBackToSource< / a > () {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00411" > < / a > < span class = "lineno" > 411< / span >   < a class = "code" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00412" > < / a > < span class = "lineno" > 412< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > num_nodes = graph_-> num_nodes();< / div >
2020-09-02 09:42:51 +02:00
< 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 >   < span class = "comment" > // We implement a variation of Tarjan' s strongly connected component algorithm< / span > < / div >
< div class = "line" > < a name = "l00415" > < / a > < span class = "lineno" > 415< / span >   < span class = "comment" > // to detect cycles published in: Tarjan, R. E. (1972), " Depth-first search< / span > < / div >
< div class = "line" > < a name = "l00416" > < / a > < span class = "lineno" > 416< / span >   < span class = "comment" > // and linear graph algorithms" , SIAM Journal on Computing. A description can< / span > < / div >
< div class = "line" > < a name = "l00417" > < / a > < span class = "lineno" > 417< / span >   < span class = "comment" > // also be found in wikipedia.< / span > < / div >
< div class = "line" > < a name = "l00418" > < / a > < span class = "lineno" > 418< / span >   < / div >
< div class = "line" > < a name = "l00419" > < / a > < span class = "lineno" > 419< / span >   < span class = "comment" > // Stored nodes are settled nodes already stored in the< / span > < / div >
< div class = "line" > < a name = "l00420" > < / a > < span class = "lineno" > 420< / span >   < span class = "comment" > // reverse_topological_order (except the sink_ that we do not actually store).< / span > < / div >
< div class = "line" > < a name = "l00421" > < / a > < span class = "lineno" > 421< / span >   std::vector< bool> stored(num_nodes, < span class = "keyword" > false< / span > );< / div >
< div class = "line" > < a name = "l00422" > < / a > < span class = "lineno" > 422< / span >   stored[sink_] = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00423" > < / a > < span class = "lineno" > 423< / span >   < / div >
< div class = "line" > < a name = "l00424" > < / a > < span class = "lineno" > 424< / span >   < span class = "comment" > // The visited nodes that are not yet stored are all the nodes from the< / span > < / div >
< div class = "line" > < a name = "l00425" > < / a > < span class = "lineno" > 425< / span >   < span class = "comment" > // source_ to the current node in the current dfs branch.< / span > < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00426" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#afbd2be8210b3c04ac5ee3a879f1e62de" > 426< / a > < / span >   std::vector< bool> visited(num_nodes, < span class = "keyword" > false< / span > );< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00427" > < / a > < span class = "lineno" > 427< / span >   visited[sink_] = < span class = "keyword" > true< / span > ;< / 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 >   < span class = "comment" > // Stack of arcs to explore in the dfs search.< / span > < / div >
< div class = "line" > < a name = "l00430" > < / a > < span class = "lineno" > 430< / span >   < span class = "comment" > // The current node is Head(arc_stack.back()).< / span > < / div >
< div class = "line" > < a name = "l00431" > < / a > < span class = "lineno" > 431< / span >   std::vector< ArcIndex> arc_stack;< / div >
< div class = "line" > < a name = "l00432" > < / a > < span class = "lineno" > 432< / span >   < / div >
< div class = "line" > < a name = "l00433" > < / a > < span class = "lineno" > 433< / span >   < span class = "comment" > // Increasing list of indices into the arc_stack that correspond to the list< / span > < / div >
< div class = "line" > < a name = "l00434" > < / a > < span class = "lineno" > 434< / span >   < span class = "comment" > // of arcs in the current dfs branch from the source_ to the current node.< / span > < / div >
< div class = "line" > < a name = "l00435" > < / a > < span class = "lineno" > 435< / span >   std::vector< int> index_branch;< / 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 = "comment" > // Node in reverse_topological_order in the final dfs tree.< / span > < / div >
< div class = "line" > < a name = "l00438" > < / a > < span class = "lineno" > 438< / span >   std::vector< NodeIndex> reverse_topological_order;< / div >
< div class = "line" > < a name = "l00439" > < / a > < span class = "lineno" > 439< / span >   < / div >
< div class = "line" > < a name = "l00440" > < / a > < span class = "lineno" > 440< / span >   < span class = "comment" > // We start by pushing all the outgoing arcs from the source on the stack to< / span > < / div >
< div class = "line" > < a name = "l00441" > < / a > < span class = "lineno" > 441< / span >   < span class = "comment" > // avoid special conditions in the code. As a result, source_ will not be< / span > < / div >
< div class = "line" > < a name = "l00442" > < / a > < span class = "lineno" > 442< / span >   < span class = "comment" > // stored in reverse_topological_order, and this is what we want.< / span > < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00443" > < / a > < span class = "lineno" > 443< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a0d012d3907b8306ddfc1a7089342fbe2" > OutgoingArcIterator< / a > it(*graph_, source_); it.Ok(); it.Next()) {< / div >
< div class = "line" > < a name = "l00444" > < / a > < span class = "lineno" > 444< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > arc = it.Index();< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00445" > < / a > < span class = "lineno" > 445< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > flow = Flow(arc);< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00446" > < / a > < span class = "lineno" > 446< / span >   < span class = "keywordflow" > if< / span > (flow > 0) {< / div >
< div class = "line" > < a name = "l00447" > < / a > < span class = "lineno" > 447< / span >   arc_stack.push_back(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 >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00450" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#a2a555ba2dc0a468e6fee4a0665b12272" > 450< / a > < / span >   visited[source_] = < span class = "keyword" > true< / span > ;< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00451" > < / a > < span class = "lineno" > 451< / span >   < / div >
< div class = "line" > < a name = "l00452" > < / a > < span class = "lineno" > 452< / span >   < span class = "comment" > // Start the dfs on the subgraph formed by the direct arcs with positive flow.< / span > < / div >
< div class = "line" > < a name = "l00453" > < / a > < span class = "lineno" > 453< / span >   < span class = "keywordflow" > while< / span > (!arc_stack.empty()) {< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00454" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#a2212ce00ee245370c5cb71234244027a" > 454< / a > < / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > node = Head(arc_stack.back());< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00455" > < / a > < span class = "lineno" > 455< / span >   < / div >
< div class = "line" > < a name = "l00456" > < / a > < span class = "lineno" > 456< / span >   < span class = "comment" > // If the node is visited, it means we have explored all its arcs and we< / span > < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00457" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#a7316c54af53df2e1f2ebc3d7fa1d5c45" > 457< / a > < / span >   < span class = "comment" > // have just backtracked in the dfs. Store it if it is not already stored< / span > < / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00458" > < / a > < span class = "lineno" > 458< / span >   < span class = "comment" > // and process the next arc on the stack.< / span > < / div >
< div class = "line" > < a name = "l00459" > < / a > < span class = "lineno" > 459< / span >   < span class = "keywordflow" > if< / span > (visited[node]) {< / div >
< div class = "line" > < a name = "l00460" > < / a > < span class = "lineno" > 460< / span >   < span class = "keywordflow" > if< / span > (!stored[node]) {< / div >
< div class = "line" > < a name = "l00461" > < / a > < span class = "lineno" > 461< / span >   stored[node] = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00462" > < / a > < span class = "lineno" > 462< / span >   reverse_topological_order.push_back(node);< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00463" > < / a > < span class = "lineno" > 463< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (!index_branch.empty());< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00464" > < / a > < span class = "lineno" > 464< / span >   index_branch.pop_back();< / div >
< div class = "line" > < a name = "l00465" > < / a > < span class = "lineno" > 465< / span >   }< / div >
< div class = "line" > < a name = "l00466" > < / a > < span class = "lineno" > 466< / span >   arc_stack.pop_back();< / div >
< div class = "line" > < a name = "l00467" > < / a > < span class = "lineno" > 467< / span >   < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a name = "l00468" > < / a > < span class = "lineno" > 468< / span >   }< / 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 >   < span class = "comment" > // The node is a new unexplored node, add all its outgoing arcs with< / span > < / div >
< div class = "line" > < a name = "l00471" > < / a > < span class = "lineno" > 471< / span >   < span class = "comment" > // positive flow to the stack and go deeper in the dfs.< / span > < / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00472" > < / a > < span class = "lineno" > 472< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (!stored[node]);< / div >
< div class = "line" > < a name = "l00473" > < / a > < span class = "lineno" > 473< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (index_branch.empty() ||< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00474" > < / a > < span class = "lineno" > 474< / span >   (arc_stack.size() - 1 > index_branch.back()));< / div >
< div class = "line" > < a name = "l00475" > < / a > < span class = "lineno" > 475< / span >   visited[node] = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00476" > < / a > < span class = "lineno" > 476< / span >   index_branch.push_back(arc_stack.size() - 1);< / div >
< div class = "line" > < a name = "l00477" > < / a > < span class = "lineno" > 477< / span >   < / div >
< div class = "line" > < a name = "l00478" > < / a > < span class = "lineno" > 478< / span >   < span class = "keywordflow" > for< / span > (OutgoingArcIterator it(*graph_, node); it.Ok(); it.Next()) {< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00479" > < / a > < span class = "lineno" > 479< / 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 = "l00480" > < / a > < span class = "lineno" > 480< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > flow = Flow(arc);< / div >
< div class = "line" > < a name = "l00481" > < / a > < span class = "lineno" > 481< / 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 = "l00482" > < / a > < span class = "lineno" > 482< / span >   < span class = "keywordflow" > if< / span > (flow > 0 & & !stored[< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ]) {< / div >
< div class = "line" > < a name = "l00483" > < / a > < span class = "lineno" > 483< / span >   < span class = "keywordflow" > if< / span > (!visited[< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ]) {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00484" > < / a > < span class = "lineno" > 484< / span >   arc_stack.push_back(arc);< / div >
< div class = "line" > < a name = "l00485" > < / a > < span class = "lineno" > 485< / span >   } < span class = "keywordflow" > else< / span > {< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00486" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#ad45b094d532baccee95649c24192f87a" > 486< / a > < / span >   < span class = "comment" > // There is a cycle.< / span > < / div >
< div class = "line" > < a name = "l00487" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#ad28be43d46715cda54108a189081d139" > 487< / a > < / span >   < span class = "comment" > // Find the first index to consider,< / span > < / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00488" > < / a > < span class = "lineno" > 488< / span >   < span class = "comment" > // arc_stack[index_branch[cycle_begin]] will be the first arc on the< / span > < / div >
< div class = "line" > < a name = "l00489" > < / a > < span class = "lineno" > 489< / span >   < span class = "comment" > // cycle.< / span > < / div >
< div class = "line" > < a name = "l00490" > < / a > < span class = "lineno" > 490< / span >   < span class = "keywordtype" > int< / span > cycle_begin = index_branch.size();< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00491" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#af4b75883cbba15f442c627f5da96f470" > 491< / a > < / span >   < span class = "keywordflow" > while< / span > (cycle_begin > 0 & & < / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00492" > < / a > < span class = "lineno" > 492< / span >   Head(arc_stack[index_branch[cycle_begin - 1]]) != < a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ) {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00493" > < / a > < span class = "lineno" > 493< / span >   --cycle_begin;< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00494" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#a0f81f6e049ffb2b2a27c8e45dc0a25a0" > 494< / a > < / span >   }< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00495" > < / a > < span class = "lineno" > 495< / span >   < / div >
< div class = "line" > < a name = "l00496" > < / a > < span class = "lineno" > 496< / span >   < span class = "comment" > // Compute the maximum flow that can be canceled on the cycle and the< / span > < / div >
< div class = "line" > < a name = "l00497" > < / a > < span class = "lineno" > 497< / span >   < span class = "comment" > // min index such that arc_stack[index_branch[i]] will be saturated.< / span > < / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00498" > < / a > < span class = "lineno" > 498< / span >   < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > max_flow = flow;< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00499" > < / a > < span class = "lineno" > 499< / span >   < span class = "keywordtype" > int< / span > first_saturated_index = index_branch.size();< / div >
< div class = "line" > < a name = "l00500" > < / a > < span class = "lineno" > 500< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = index_branch.size() - 1; i > = cycle_begin; --i) {< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00501" > < / a > < span class = "lineno" > 501< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > arc_on_cycle = arc_stack[index_branch[i]];< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00502" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#a3a4afd902c22768de7955ba9983fb282" > 502< / a > < / span >   < span class = "keywordflow" > if< / span > (Flow(arc_on_cycle) < = max_flow) {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00503" > < / a > < span class = "lineno" > 503< / span >   max_flow = Flow(arc_on_cycle);< / div >
< div class = "line" > < a name = "l00504" > < / a > < span class = "lineno" > 504< / span >   first_saturated_index = i;< / div >
< div class = "line" > < a name = "l00505" > < / a > < span class = "lineno" > 505< / span >   }< / div >
< div class = "line" > < a name = "l00506" > < / a > < span class = "lineno" > 506< / 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 >   < span class = "comment" > // This is just here for a DCHECK() below.< / span > < / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00509" > < / a > < span class = "lineno" > 509< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > excess = node_excess_[< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ];< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00510" > < / a > < span class = "lineno" > 510< / span >   < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00511" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#a28b52dfd2da6e91a8e1e0d039c1d4154" > 511< / a > < / span >   < span class = "comment" > // Cancel the flow on the cycle, and set visited[node] = false for< / span > < / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00512" > < / a > < span class = "lineno" > 512< / span >   < span class = "comment" > // the node that will be backtracked over.< / span > < / div >
< div class = "line" > < a name = "l00513" > < / a > < span class = "lineno" > 513< / span >   PushFlow(-max_flow, arc);< / div >
< div class = "line" > < a name = "l00514" > < / a > < span class = "lineno" > 514< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = index_branch.size() - 1; i > = cycle_begin; --i) {< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00515" > < / a > < span class = "lineno" > 515< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > arc_on_cycle = arc_stack[index_branch[i]];< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00516" > < / a > < span class = "lineno" > 516< / span >   PushFlow(-max_flow, arc_on_cycle);< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00517" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#a24f768765349e100ca2ef7697d1b52d5" > 517< / a > < / span >   < span class = "keywordflow" > if< / span > (i > = first_saturated_index) {< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00518" > < / a > < span class = "lineno" > 518< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (visited[Head(arc_on_cycle)]);< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00519" > < / a > < span class = "lineno" > 519< / span >   visited[Head(arc_on_cycle)] = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00520" > < / a > < span class = "lineno" > 520< / span >   } < span class = "keywordflow" > else< / span > {< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00521" > < / a > < span class = "lineno" > 521< / span >   < a class = "code" href = "base_2logging_8h.html#ab4f56aa24c4c9cddc47a6abd2d747f9a" > DCHECK_GT< / a > (Flow(arc_on_cycle), 0);< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00522" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#abedc5621560431c2527859bd5d1ab8fc" > 522< / a > < / span >   }< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00523" > < / a > < span class = "lineno" > 523< / span >   }< / div >
< div class = "line" > < a name = "l00524" > < / a > < span class = "lineno" > 524< / span >   < / div >
< div class = "line" > < a name = "l00525" > < / a > < span class = "lineno" > 525< / span >   < span class = "comment" > // This is a simple check that the flow was pushed properly.< / span > < / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00526" > < / a > < span class = "lineno" > 526< / span >   < a class = "code" href = "base_2logging_8h.html#ae89df3243bbb8341130c7b3f44145ea0" > DCHECK_EQ< / a > (excess, node_excess_[< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ]);< / div >
2020-09-02 09:42:51 +02:00
< 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 >   < span class = "comment" > // Backtrack the dfs just before index_branch[first_saturated_index].< / span > < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00529" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#a187f8b09657eacdfef77202c595543f6" > 529< / a > < / span >   < span class = "comment" > // If the current node is still active, there is nothing to do.< / span > < / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00530" > < / a > < span class = "lineno" > 530< / span >   < span class = "keywordflow" > if< / span > (first_saturated_index < index_branch.size()) {< / div >
< div class = "line" > < a name = "l00531" > < / a > < span class = "lineno" > 531< / span >   arc_stack.resize(index_branch[first_saturated_index]);< / div >
< div class = "line" > < a name = "l00532" > < / a > < span class = "lineno" > 532< / span >   index_branch.resize(first_saturated_index);< / div >
< div class = "line" > < a name = "l00533" > < / a > < span class = "lineno" > 533< / span >   < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00534" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#ae5ff1c955df682c39482f2cc5e23e900" > 534< / a > < / span >   < span class = "comment" > // We backtracked over the current node, so there is no need to< / span > < / div >
< div class = "line" > < a name = "l00535" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#af3a76f97fe869af7137bbc9a165353b1" > 535< / a > < / span >   < span class = "comment" > // continue looping over its arcs.< / span > < / div >
< div class = "line" > < a name = "l00536" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#ac17ea9ef2dc1b5eace76f625abe36475" > 536< / a > < / span >   < span class = "keywordflow" > break< / span > ;< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00537" > < / a > < span class = "lineno" > 537< / span >   }< / div >
< div class = "line" > < a name = "l00538" > < / a > < span class = "lineno" > 538< / span >   }< / 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 >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00541" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#ac0290c8f8892c50d7b29e9770fda4923" > 541< / a > < / span >   }< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00542" > < / a > < span class = "lineno" > 542< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (arc_stack.empty());< / div >
< div class = "line" > < a name = "l00543" > < / a > < span class = "lineno" > 543< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (index_branch.empty());< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00544" > < / a > < span class = "lineno" > 544< / span >   < / div >
< div class = "line" > < a name = "l00545" > < / a > < span class = "lineno" > 545< / span >   < span class = "comment" > // Return the flow to the sink. Note that the sink_ and the source_ are not< / span > < / div >
< div class = "line" > < a name = "l00546" > < / a > < span class = "lineno" > 546< / span >   < span class = "comment" > // stored in reverse_topological_order.< / span > < / div >
< div class = "line" > < a name = "l00547" > < / a > < span class = "lineno" > 547< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < reverse_topological_order.size(); i++) {< / div >
< div class = "line" > < a name = "l00548" > < / a > < span class = "lineno" > 548< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a7ae31ba4c3b4899478e53ca13df35dfc" > NodeIndex< / a > node = reverse_topological_order[i];< / div >
< div class = "line" > < a name = "l00549" > < / a > < span class = "lineno" > 549< / span >   < span class = "keywordflow" > if< / span > (node_excess_[node] == 0) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a name = "l00550" > < / a > < span class = "lineno" > 550< / span >   < span class = "keywordflow" > for< / span > (IncomingArcIterator it(*graph_, node); it.Ok(); it.Next()) {< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00551" > < / a > < span class = "lineno" > 551< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > ArcIndex< / a > opposite_arc = Opposite(it.Index());< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00552" > < / a > < span class = "lineno" > 552< / span >   < span class = "keywordflow" > if< / span > (residual_arc_capacity_[opposite_arc] > 0) {< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00553" > < / a > < span class = "lineno" > 553< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > flow =< / div >
< div class = "line" > < a name = "l00554" > < / a > < span class = "lineno" > 554< / span >   < a class = "code" href = "alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045" > std::min< / a > (node_excess_[node], residual_arc_capacity_[opposite_arc]);< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00555" > < / a > < span class = "lineno" > 555< / span >   PushFlow(flow, opposite_arc);< / div >
< div class = "line" > < a name = "l00556" > < / a > < span class = "lineno" > 556< / span >   < span class = "keywordflow" > if< / span > (node_excess_[node] == 0) < span class = "keywordflow" > break< / span > ;< / 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 >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00559" > < / a > < span class = "lineno" > 559< / span >   < a class = "code" href = "base_2logging_8h.html#ae89df3243bbb8341130c7b3f44145ea0" > DCHECK_EQ< / a > (0, node_excess_[node]);< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00560" > < / a > < span class = "lineno" > 560< / span >   }< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00561" > < / a > < span class = "lineno" > 561< / span >   < a class = "code" href = "base_2logging_8h.html#ae89df3243bbb8341130c7b3f44145ea0" > DCHECK_EQ< / a > (-node_excess_[source_], node_excess_[sink_]);< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00562" > < / a > < span class = "lineno" > 562< / span >   }< / div >
< div class = "line" > < a name = "l00563" > < / a > < span class = "lineno" > 563< / span >   < / div >
< div class = "line" > < a name = "l00564" > < / a > < span class = "lineno" > 564< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph> < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00565" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#a28b52dfd2da6e91a8e1e0d039c1d4154" > 565< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a28b52dfd2da6e91a8e1e0d039c1d4154" > GenericMaxFlow< Graph> ::GlobalUpdate< / a > () {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00566" > < / a > < span class = "lineno" > 566< / span >   < a class = "code" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a name = "l00567" > < / a > < span class = "lineno" > 567< / span >   bfs_queue_.clear();< / div >
< div class = "line" > < a name = "l00568" > < / a > < span class = "lineno" > 568< / span >   < span class = "keywordtype" > int< / span > queue_index = 0;< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00569" > < / a > < span class = "lineno" > 569< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > num_nodes = graph_-> num_nodes();< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00570" > < / a > < span class = "lineno" > 570< / span >   node_in_bfs_queue_.assign(num_nodes, < span class = "keyword" > false< / span > );< / div >
< div class = "line" > < a name = "l00571" > < / a > < span class = "lineno" > 571< / span >   node_in_bfs_queue_[sink_] = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00572" > < / a > < span class = "lineno" > 572< / span >   node_in_bfs_queue_[source_] = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00573" > < / a > < span class = "lineno" > 573< / span >   < / div >
< div class = "line" > < a name = "l00574" > < / a > < span class = "lineno" > 574< / span >   < span class = "comment" > // We do two BFS in the reverse residual graph, one from the sink and one from< / span > < / div >
< div class = "line" > < a name = "l00575" > < / a > < span class = "lineno" > 575< / span >   < span class = "comment" > // the source. Because all the arcs from the source are saturated (except in< / span > < / div >
< div class = "line" > < a name = "l00576" > < / a > < span class = "lineno" > 576< / span >   < span class = "comment" > // presence of integer overflow), the source cannot reach the sink in the< / span > < / div >
< div class = "line" > < a name = "l00577" > < / a > < span class = "lineno" > 577< / span >   < span class = "comment" > // residual graph. However, we still want to relabel all the nodes that cannot< / span > < / div >
< div class = "line" > < a name = "l00578" > < / a > < span class = "lineno" > 578< / span >   < span class = "comment" > // reach the sink but can reach the source (because if they have excess, we< / span > < / div >
< div class = "line" > < a name = "l00579" > < / a > < span class = "lineno" > 579< / span >   < span class = "comment" > // need to push it back to the source).< / span > < / div >
< div class = "line" > < a name = "l00580" > < / a > < span class = "lineno" > 580< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00581" > < / a > < span class = "lineno" > 581< / span >   < span class = "comment" > // Note that the second pass is not needed here if we use a two-pass algorithm< / span > < / div >
< div class = "line" > < a name = "l00582" > < / a > < span class = "lineno" > 582< / span >   < span class = "comment" > // to return the flow to the source after we found the min cut.< / span > < / div >
< div class = "line" > < a name = "l00583" > < / a > < span class = "lineno" > 583< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > num_passes = use_two_phase_algorithm_ ? 1 : 2;< / div >
< div class = "line" > < a name = "l00584" > < / a > < span class = "lineno" > 584< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > pass = 0; pass < num_passes; ++pass) {< / div >
< div class = "line" > < a name = "l00585" > < / a > < span class = "lineno" > 585< / span >   < span class = "keywordflow" > if< / span > (pass == 0) {< / div >
< div class = "line" > < a name = "l00586" > < / a > < span class = "lineno" > 586< / span >   bfs_queue_.push_back(sink_);< / div >
< div class = "line" > < a name = "l00587" > < / a > < span class = "lineno" > 587< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00588" > < / a > < span class = "lineno" > 588< / span >   bfs_queue_.push_back(source_);< / div >
< div class = "line" > < a name = "l00589" > < / a > < span class = "lineno" > 589< / span >   }< / div >
< div class = "line" > < a name = "l00590" > < / a > < span class = "lineno" > 590< / span >   < / div >
< div class = "line" > < a name = "l00591" > < / a > < span class = "lineno" > 591< / span >   < span class = "keywordflow" > while< / span > (queue_index != bfs_queue_.size()) {< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00592" > < / a > < span class = "lineno" > 592< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > node = bfs_queue_[queue_index];< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00593" > < / a > < span class = "lineno" > 593< / span >   ++queue_index;< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00594" > < / a > < span class = "lineno" > 594< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > candidate_distance = node_potential_[node] + 1;< / div >
< div class = "line" > < a name = "l00595" > < / a > < span class = "lineno" > 595< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a277838ded7171a604a67babdbea05988" > OutgoingOrOppositeIncomingArcIterator< / a > it(*graph_, node); it.Ok();< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00596" > < / a > < span class = "lineno" > 596< / span >   it.Next()) {< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00597" > < / a > < span class = "lineno" > 597< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > arc = it.Index();< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00598" > < / a > < span class = "lineno" > 598< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > < a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > = Head(arc);< / div >
2020-09-02 09:42:51 +02:00
< 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" > // Skip the arc if the height of head was already set to the correct< / span > < / div >
< div class = "line" > < a name = "l00601" > < / a > < span class = "lineno" > 601< / span >   < span class = "comment" > // value (Remember we are doing reverse BFS).< / span > < / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00602" > < / a > < span class = "lineno" > 602< / span >   < span class = "keywordflow" > if< / span > (node_in_bfs_queue_[< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ]) < span class = "keywordflow" > continue< / span > ;< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00603" > < / a > < span class = "lineno" > 603< / span >   < / div >
< div class = "line" > < a name = "l00604" > < / a > < span class = "lineno" > 604< / span >   < span class = "comment" > // TODO(user): By using more memory we can speed this up quite a bit by< / span > < / div >
< div class = "line" > < a name = "l00605" > < / a > < span class = "lineno" > 605< / span >   < span class = "comment" > // avoiding to take the opposite arc here, too options:< / span > < / div >
< div class = "line" > < a name = "l00606" > < / a > < span class = "lineno" > 606< / span >   < span class = "comment" > // - if (residual_arc_capacity_[arc] != arc_capacity_[arc])< / span > < / div >
< div class = "line" > < a name = "l00607" > < / a > < span class = "lineno" > 607< / span >   < span class = "comment" > // - if (opposite_arc_is_admissible_[arc]) // need updates.< / span > < / div >
< div class = "line" > < a name = "l00608" > < / a > < span class = "lineno" > 608< / span >   < span class = "comment" > // Experiment with the first option shows more than 10% gain on this< / span > < / div >
< div class = "line" > < a name = "l00609" > < / a > < span class = "lineno" > 609< / span >   < span class = "comment" > // function running time, which is the bottleneck on many instances.< / span > < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00610" > < / a > < span class = "lineno" > 610< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > opposite_arc = Opposite(arc);< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00611" > < / a > < span class = "lineno" > 611< / span >   < span class = "keywordflow" > if< / span > (residual_arc_capacity_[opposite_arc] > 0) {< / div >
< div class = "line" > < a name = "l00612" > < / a > < span class = "lineno" > 612< / span >   < span class = "comment" > // Note(user): We used to have a DCHECK_GE(candidate_distance,< / span > < / div >
< div class = "line" > < a name = "l00613" > < / a > < span class = "lineno" > 613< / span >   < span class = "comment" > // node_potential_[head]); which is always true except in the case< / span > < / div >
< div class = "line" > < a name = "l00614" > < / a > < span class = "lineno" > 614< / span >   < span class = "comment" > // where we can push more than kMaxFlowQuantity out of the source. The< / span > < / div >
< div class = "line" > < a name = "l00615" > < / a > < span class = "lineno" > 615< / span >   < span class = "comment" > // problem comes from the fact that in this case, we call< / span > < / div >
< div class = "line" > < a name = "l00616" > < / a > < span class = "lineno" > 616< / span >   < span class = "comment" > // PushFlowExcessBackToSource() in the middle of the algorithm. The< / span > < / div >
< div class = "line" > < a name = "l00617" > < / a > < span class = "lineno" > 617< / span >   < span class = "comment" > // later call will break the properties of the node potential. Note< / span > < / div >
< div class = "line" > < a name = "l00618" > < / a > < span class = "lineno" > 618< / span >   < span class = "comment" > // however, that this function will recompute a good node potential< / span > < / div >
< div class = "line" > < a name = "l00619" > < / a > < span class = "lineno" > 619< / span >   < span class = "comment" > // for all the nodes and thus fix the issue.< / span > < / div >
< div class = "line" > < a name = "l00620" > < / a > < span class = "lineno" > 620< / span >   < / div >
< div class = "line" > < a name = "l00621" > < / a > < span class = "lineno" > 621< / span >   < span class = "comment" > // If head is active, we can steal some or all of its excess.< / span > < / div >
< div class = "line" > < a name = "l00622" > < / a > < span class = "lineno" > 622< / span >   < span class = "comment" > // This brings a huge gain on some problems.< / span > < / div >
< div class = "line" > < a name = "l00623" > < / a > < span class = "lineno" > 623< / span >   < span class = "comment" > // Note(user): I haven' t seen this anywhere in the literature.< / span > < / div >
< div class = "line" > < a name = "l00624" > < / a > < span class = "lineno" > 624< / span >   < span class = "comment" > // TODO(user): Investigate more and maybe write a publication :)< / span > < / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00625" > < / a > < span class = "lineno" > 625< / span >   < span class = "keywordflow" > if< / span > (node_excess_[< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ] > 0) {< / div >
< div class = "line" > < a name = "l00626" > < / a > < span class = "lineno" > 626< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > flow = < a class = "code" href = "alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045" > std::min< / a > (< / div >
< div class = "line" > < a name = "l00627" > < / a > < span class = "lineno" > 627< / span >   node_excess_[< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ], residual_arc_capacity_[opposite_arc]);< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00628" > < / a > < span class = "lineno" > 628< / span >   PushFlow(flow, opposite_arc);< / div >
< div class = "line" > < a name = "l00629" > < / a > < span class = "lineno" > 629< / span >   < / div >
< div class = "line" > < a name = "l00630" > < / a > < span class = "lineno" > 630< / span >   < span class = "comment" > // If the arc became saturated, it is no longer in the residual< / span > < / div >
< div class = "line" > < a name = "l00631" > < / a > < span class = "lineno" > 631< / span >   < span class = "comment" > // graph, so we do not need to consider head at this time.< / span > < / div >
< div class = "line" > < a name = "l00632" > < / a > < span class = "lineno" > 632< / span >   < span class = "keywordflow" > if< / span > (residual_arc_capacity_[opposite_arc] == 0) < span class = "keywordflow" > continue< / span > ;< / 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 = "comment" > // Note that there is no need to touch first_admissible_arc_[node]< / span > < / div >
< div class = "line" > < a name = "l00636" > < / a > < span class = "lineno" > 636< / span >   < span class = "comment" > // because of the relaxed Relabel() we use.< / span > < / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00637" > < / a > < span class = "lineno" > 637< / span >   node_potential_[< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ] = candidate_distance;< / div >
< div class = "line" > < a name = "l00638" > < / a > < span class = "lineno" > 638< / span >   node_in_bfs_queue_[< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ] = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00639" > < / a > < span class = "lineno" > 639< / span >   bfs_queue_.push_back(< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > );< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00640" > < / a > < span class = "lineno" > 640< / span >   }< / div >
< div class = "line" > < a name = "l00641" > < / a > < span class = "lineno" > 641< / span >   }< / div >
< div class = "line" > < a name = "l00642" > < / a > < span class = "lineno" > 642< / span >   }< / 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 >   < span class = "comment" > // At the end of the search, some nodes may not be in the bfs_queue_. Such< / span > < / div >
< div class = "line" > < a name = "l00646" > < / a > < span class = "lineno" > 646< / span >   < span class = "comment" > // nodes cannot reach the sink_ or source_ in the residual graph, so there is< / span > < / div >
< div class = "line" > < a name = "l00647" > < / a > < span class = "lineno" > 647< / span >   < span class = "comment" > // no point trying to push flow toward them. We obtain this effect by setting< / span > < / div >
< div class = "line" > < a name = "l00648" > < / a > < span class = "lineno" > 648< / span >   < span class = "comment" > // their height to something unreachable.< / span > < / div >
< div class = "line" > < a name = "l00649" > < / a > < span class = "lineno" > 649< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00650" > < / a > < span class = "lineno" > 650< / span >   < span class = "comment" > // Note that this also prevents cycling due to our anti-overflow procedure.< / span > < / div >
< div class = "line" > < a name = "l00651" > < / a > < span class = "lineno" > 651< / span >   < span class = "comment" > // For instance, suppose there is an edge s -> n outgoing from the source. If< / span > < / div >
< div class = "line" > < a name = "l00652" > < / a > < span class = "lineno" > 652< / span >   < span class = "comment" > // node n has no other connection and some excess, we will push the flow back< / span > < / div >
< div class = "line" > < a name = "l00653" > < / a > < span class = "lineno" > 653< / span >   < span class = "comment" > // to the source, but if we don' t update the height of n< / span > < / div >
< div class = "line" > < a name = "l00654" > < / a > < span class = "lineno" > 654< / span >   < span class = "comment" > // SaturateOutgoingArcsFromSource() will push the flow to n again.< / span > < / div >
< div class = "line" > < a name = "l00655" > < / a > < span class = "lineno" > 655< / span >   < span class = "comment" > // TODO(user): This is another argument for another anti-overflow algorithm.< / span > < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00656" > < / a > < span class = "lineno" > 656< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > node = 0; node < num_nodes; ++node) {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00657" > < / a > < span class = "lineno" > 657< / span >   < span class = "keywordflow" > if< / span > (!node_in_bfs_queue_[node]) {< / div >
< div class = "line" > < a name = "l00658" > < / a > < span class = "lineno" > 658< / span >   node_potential_[node] = 2 * num_nodes - 1;< / div >
< div class = "line" > < a name = "l00659" > < / a > < span class = "lineno" > 659< / span >   }< / div >
< div class = "line" > < a name = "l00660" > < / a > < span class = "lineno" > 660< / span >   }< / div >
< div class = "line" > < a name = "l00661" > < / a > < span class = "lineno" > 661< / span >   < / div >
< div class = "line" > < a name = "l00662" > < / a > < span class = "lineno" > 662< / span >   < span class = "comment" > // Reset the active nodes. Doing it like this pushes the nodes in increasing< / span > < / div >
< div class = "line" > < a name = "l00663" > < / a > < span class = "lineno" > 663< / span >   < span class = "comment" > // order of height. Note that bfs_queue_[0] is the sink_ so we skip it.< / span > < / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00664" > < / a > < span class = "lineno" > 664< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (IsEmptyActiveNodeContainer());< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00665" > < / a > < span class = "lineno" > 665< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 1; i < bfs_queue_.size(); ++i) {< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00666" > < / a > < span class = "lineno" > 666< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > node = bfs_queue_[i];< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00667" > < / a > < span class = "lineno" > 667< / span >   < span class = "keywordflow" > if< / span > (node_excess_[node] > 0) {< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00668" > < / a > < span class = "lineno" > 668< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (IsActive(node));< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00669" > < / a > < span class = "lineno" > 669< / span >   PushActiveNode(node);< / 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 >   }< / div >
< div class = "line" > < a name = "l00672" > < / a > < span class = "lineno" > 672< / span >   }< / div >
< div class = "line" > < a name = "l00673" > < / a > < span class = "lineno" > 673< / span >   < / div >
< div class = "line" > < a name = "l00674" > < / a > < span class = "lineno" > 674< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph> < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00675" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#a24f768765349e100ca2ef7697d1b52d5" > 675< / a > < / span >   < span class = "keywordtype" > bool< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a24f768765349e100ca2ef7697d1b52d5" > GenericMaxFlow< Graph> ::SaturateOutgoingArcsFromSource< / a > () {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00676" > < / a > < span class = "lineno" > 676< / span >   < a class = "code" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00677" > < / a > < span class = "lineno" > 677< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > num_nodes = graph_-> num_nodes();< / div >
2020-09-02 09:42:51 +02:00
< 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" > // If sink_ or source_ already have kMaxFlowQuantity, then there is no< / span > < / div >
< div class = "line" > < a name = "l00680" > < / a > < span class = "lineno" > 680< / span >   < span class = "comment" > // point pushing more flow since it will cause an integer overflow.< / span > < / div >
< div class = "line" > < a name = "l00681" > < / a > < span class = "lineno" > 681< / span >   < span class = "keywordflow" > if< / span > (node_excess_[sink_] == kMaxFlowQuantity) < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00682" > < / a > < span class = "lineno" > 682< / span >   < span class = "keywordflow" > if< / span > (node_excess_[source_] == -kMaxFlowQuantity) < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00683" > < / a > < span class = "lineno" > 683< / span >   < / div >
< div class = "line" > < a name = "l00684" > < / a > < span class = "lineno" > 684< / span >   < span class = "keywordtype" > bool< / span > flow_pushed = < span class = "keyword" > false< / span > ;< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00685" > < / a > < span class = "lineno" > 685< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a0d012d3907b8306ddfc1a7089342fbe2" > OutgoingArcIterator< / a > it(*graph_, source_); it.Ok(); it.Next()) {< / div >
< div class = "line" > < a name = "l00686" > < / a > < span class = "lineno" > 686< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > arc = it.Index();< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00687" > < / a > < span class = "lineno" > 687< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > flow = residual_arc_capacity_[arc];< / div >
2020-09-02 09:42:51 +02:00
< 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 >   < span class = "comment" > // This is a special IsAdmissible() condition for the source.< / span > < / div >
< div class = "line" > < a name = "l00690" > < / a > < span class = "lineno" > 690< / span >   < span class = "keywordflow" > if< / span > (flow == 0 || node_potential_[Head(arc)] > = num_nodes) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a name = "l00691" > < / a > < span class = "lineno" > 691< / span >   < / div >
< div class = "line" > < a name = "l00692" > < / a > < span class = "lineno" > 692< / span >   < span class = "comment" > // We are careful in case the sum of the flow out of the source is greater< / span > < / div >
< div class = "line" > < a name = "l00693" > < / a > < span class = "lineno" > 693< / span >   < span class = "comment" > // than kMaxFlowQuantity to avoid overflow.< / span > < / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00694" > < / a > < span class = "lineno" > 694< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > current_flow_out_of_source = -node_excess_[source_];< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00695" > < / a > < span class = "lineno" > 695< / span >   < a class = "code" href = "base_2logging_8h.html#aae2dc65d9ea248d54bf39daa986dd295" > DCHECK_GE< / a > (flow, 0) < < flow;< / div >
< div class = "line" > < a name = "l00696" > < / a > < span class = "lineno" > 696< / span >   < a class = "code" href = "base_2logging_8h.html#aae2dc65d9ea248d54bf39daa986dd295" > DCHECK_GE< / a > (current_flow_out_of_source, 0) < < current_flow_out_of_source;< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00697" > < / a > < span class = "lineno" > 697< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > capped_flow =< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00698" > < / a > < span class = "lineno" > 698< / span >   kMaxFlowQuantity - current_flow_out_of_source;< / div >
< div class = "line" > < a name = "l00699" > < / a > < span class = "lineno" > 699< / span >   < span class = "keywordflow" > if< / span > (capped_flow < flow) {< / div >
< div class = "line" > < a name = "l00700" > < / a > < span class = "lineno" > 700< / span >   < span class = "comment" > // We push as much flow as we can so the current flow on the network will< / span > < / div >
< div class = "line" > < a name = "l00701" > < / a > < span class = "lineno" > 701< / span >   < span class = "comment" > // be kMaxFlowQuantity.< / span > < / div >
< div class = "line" > < a name = "l00702" > < / a > < span class = "lineno" > 702< / span >   < / div >
< div class = "line" > < a name = "l00703" > < / a > < span class = "lineno" > 703< / span >   < span class = "comment" > // Since at the beginning of the function, current_flow_out_of_source< / span > < / div >
< div class = "line" > < a name = "l00704" > < / a > < span class = "lineno" > 704< / span >   < span class = "comment" > // was different from kMaxFlowQuantity, we are sure to have pushed some< / span > < / div >
< div class = "line" > < a name = "l00705" > < / a > < span class = "lineno" > 705< / span >   < span class = "comment" > // flow before if capped_flow is 0.< / span > < / div >
< div class = "line" > < a name = "l00706" > < / a > < span class = "lineno" > 706< / span >   < span class = "keywordflow" > if< / span > (capped_flow == 0) < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00707" > < / a > < span class = "lineno" > 707< / span >   PushFlow(capped_flow, arc);< / div >
< div class = "line" > < a name = "l00708" > < / a > < span class = "lineno" > 708< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00709" > < / a > < span class = "lineno" > 709< / span >   }< / div >
< div class = "line" > < a name = "l00710" > < / a > < span class = "lineno" > 710< / span >   PushFlow(flow, arc);< / div >
< div class = "line" > < a name = "l00711" > < / a > < span class = "lineno" > 711< / span >   flow_pushed = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00712" > < / a > < span class = "lineno" > 712< / span >   }< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00713" > < / a > < span class = "lineno" > 713< / span >   < a class = "code" href = "base_2logging_8h.html#a4395e95bab44e222cb2e77251017a0e2" > DCHECK_LE< / a > (node_excess_[source_], 0);< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00714" > < / a > < span class = "lineno" > 714< / span >   < span class = "keywordflow" > return< / span > flow_pushed;< / div >
< div class = "line" > < a name = "l00715" > < / a > < span class = "lineno" > 715< / span >   }< / div >
< div class = "line" > < a name = "l00716" > < / a > < span class = "lineno" > 716< / span >   < / div >
< div class = "line" > < a name = "l00717" > < / a > < span class = "lineno" > 717< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph> < / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00718" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#abedc5621560431c2527859bd5d1ab8fc" > 718< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#abedc5621560431c2527859bd5d1ab8fc" > GenericMaxFlow< Graph> ::PushFlow< / a > (< a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > flow, < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > arc) {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00719" > < / a > < span class = "lineno" > 719< / span >   < a class = "code" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a name = "l00720" > < / a > < span class = "lineno" > 720< / span >   < span class = "comment" > // TODO(user): Do not allow a zero flow after fixing the UniformMaxFlow code.< / span > < / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00721" > < / a > < span class = "lineno" > 721< / span >   < a class = "code" href = "base_2logging_8h.html#aae2dc65d9ea248d54bf39daa986dd295" > DCHECK_GE< / a > (residual_arc_capacity_[Opposite(arc)] + flow, 0);< / div >
< div class = "line" > < a name = "l00722" > < / a > < span class = "lineno" > 722< / span >   < a class = "code" href = "base_2logging_8h.html#aae2dc65d9ea248d54bf39daa986dd295" > DCHECK_GE< / a > (residual_arc_capacity_[arc] - flow, 0);< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00723" > < / a > < span class = "lineno" > 723< / span >   < / div >
< div class = "line" > < a name = "l00724" > < / a > < span class = "lineno" > 724< / span >   < span class = "comment" > // node_excess_ should be always greater than or equal to 0 except for the< / span > < / div >
< div class = "line" > < a name = "l00725" > < / a > < span class = "lineno" > 725< / span >   < span class = "comment" > // source where it should always be smaller than or equal to 0. Note however< / span > < / div >
< div class = "line" > < a name = "l00726" > < / a > < span class = "lineno" > 726< / span >   < span class = "comment" > // that we cannot check this because when we cancel the flow on a cycle in< / span > < / div >
< div class = "line" > < a name = "l00727" > < / a > < span class = "lineno" > 727< / span >   < span class = "comment" > // PushFlowExcessBackToSource(), we may break this invariant during the< / span > < / div >
< div class = "line" > < a name = "l00728" > < / a > < span class = "lineno" > 728< / span >   < span class = "comment" > // operation even if it is still valid at the end.< / span > < / div >
< div class = "line" > < a name = "l00729" > < / a > < span class = "lineno" > 729< / span >   < / div >
< div class = "line" > < a name = "l00730" > < / a > < span class = "lineno" > 730< / span >   < span class = "comment" > // Update the residual capacity of the arc and its opposite arc.< / span > < / div >
< div class = "line" > < a name = "l00731" > < / a > < span class = "lineno" > 731< / span >   residual_arc_capacity_[arc] -= flow;< / div >
< div class = "line" > < a name = "l00732" > < / a > < span class = "lineno" > 732< / span >   residual_arc_capacity_[Opposite(arc)] += flow;< / div >
< div class = "line" > < a name = "l00733" > < / a > < span class = "lineno" > 733< / span >   < / div >
< div class = "line" > < a name = "l00734" > < / a > < span class = "lineno" > 734< / span >   < span class = "comment" > // Update the excesses at the tail and head of the arc.< / span > < / div >
< div class = "line" > < a name = "l00735" > < / a > < span class = "lineno" > 735< / span >   node_excess_[Tail(arc)] -= flow;< / div >
< div class = "line" > < a name = "l00736" > < / a > < span class = "lineno" > 736< / span >   node_excess_[Head(arc)] += flow;< / div >
< div class = "line" > < a name = "l00737" > < / a > < span class = "lineno" > 737< / span >   }< / div >
< div class = "line" > < a name = "l00738" > < / a > < span class = "lineno" > 738< / span >   < / div >
< div class = "line" > < a name = "l00739" > < / a > < span class = "lineno" > 739< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph> < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00740" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#a7316c54af53df2e1f2ebc3d7fa1d5c45" > 740< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a7316c54af53df2e1f2ebc3d7fa1d5c45" > GenericMaxFlow< Graph> ::InitializeActiveNodeContainer< / a > () {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00741" > < / a > < span class = "lineno" > 741< / span >   < a class = "code" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00742" > < / a > < span class = "lineno" > 742< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (IsEmptyActiveNodeContainer());< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00743" > < / a > < span class = "lineno" > 743< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > num_nodes = graph_-> num_nodes();< / div >
< div class = "line" > < a name = "l00744" > < / a > < span class = "lineno" > 744< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > node = 0; node < num_nodes; ++node) {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00745" > < / a > < span class = "lineno" > 745< / span >   < span class = "keywordflow" > if< / span > (IsActive(node)) {< / div >
< div class = "line" > < a name = "l00746" > < / a > < span class = "lineno" > 746< / span >   < span class = "keywordflow" > if< / span > (use_two_phase_algorithm_ & & node_potential_[node] > = num_nodes) {< / div >
< div class = "line" > < a name = "l00747" > < / a > < span class = "lineno" > 747< / span >   < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a name = "l00748" > < / a > < span class = "lineno" > 748< / span >   }< / div >
< div class = "line" > < a name = "l00749" > < / a > < span class = "lineno" > 749< / span >   PushActiveNode(node);< / div >
< div class = "line" > < a name = "l00750" > < / a > < span class = "lineno" > 750< / span >   }< / div >
< div class = "line" > < a name = "l00751" > < / a > < span class = "lineno" > 751< / span >   }< / div >
< div class = "line" > < a name = "l00752" > < / a > < span class = "lineno" > 752< / span >   }< / div >
< div class = "line" > < a name = "l00753" > < / a > < span class = "lineno" > 753< / span >   < / div >
< div class = "line" > < a name = "l00754" > < / a > < span class = "lineno" > 754< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph> < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00755" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#ad45b094d532baccee95649c24192f87a" > 755< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#ad45b094d532baccee95649c24192f87a" > GenericMaxFlow< Graph> ::Refine< / a > () {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00756" > < / a > < span class = "lineno" > 756< / span >   < a class = "code" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a name = "l00757" > < / a > < span class = "lineno" > 757< / span >   < span class = "comment" > // Usually SaturateOutgoingArcsFromSource() will saturate all the arcs from< / span > < / div >
< div class = "line" > < a name = "l00758" > < / a > < span class = "lineno" > 758< / span >   < span class = "comment" > // the source in one go, and we will loop just once. But in case we can push< / span > < / div >
< div class = "line" > < a name = "l00759" > < / a > < span class = "lineno" > 759< / span >   < span class = "comment" > // more than kMaxFlowQuantity out of the source the loop is as follow:< / span > < / div >
< div class = "line" > < a name = "l00760" > < / a > < span class = "lineno" > 760< / span >   < span class = "comment" > // - Push up to kMaxFlowQuantity out of the source on the admissible outgoing< / span > < / div >
< div class = "line" > < a name = "l00761" > < / a > < span class = "lineno" > 761< / span >   < span class = "comment" > // arcs. Stop if no flow was pushed.< / span > < / div >
< div class = "line" > < a name = "l00762" > < / a > < span class = "lineno" > 762< / span >   < span class = "comment" > // - Compute the current max-flow. This will push some flow back to the< / span > < / div >
< div class = "line" > < a name = "l00763" > < / a > < span class = "lineno" > 763< / span >   < span class = "comment" > // source and render more outgoing arcs from the source not admissible.< / span > < / div >
< div class = "line" > < a name = "l00764" > < / a > < span class = "lineno" > 764< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00765" > < / a > < span class = "lineno" > 765< / span >   < span class = "comment" > // TODO(user): This may not be the most efficient algorithm if we need to loop< / span > < / div >
< div class = "line" > < a name = "l00766" > < / a > < span class = "lineno" > 766< / span >   < span class = "comment" > // many times. An alternative may be to handle the source like the other nodes< / span > < / div >
< div class = "line" > < a name = "l00767" > < / a > < span class = "lineno" > 767< / span >   < span class = "comment" > // in the algorithm, initially putting an excess of kMaxFlowQuantity on it,< / span > < / div >
< div class = "line" > < a name = "l00768" > < / a > < span class = "lineno" > 768< / span >   < span class = "comment" > // and making the source active like any other node with positive excess. To< / span > < / div >
< div class = "line" > < a name = "l00769" > < / a > < span class = "lineno" > 769< / span >   < span class = "comment" > // investigate.< / span > < / div >
< div class = "line" > < a name = "l00770" > < / a > < span class = "lineno" > 770< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00771" > < / a > < span class = "lineno" > 771< / span >   < span class = "comment" > // TODO(user): The code below is buggy when more than kMaxFlowQuantity can be< / span > < / div >
< div class = "line" > < a name = "l00772" > < / a > < span class = "lineno" > 772< / span >   < span class = "comment" > // pushed out of the source (i.e. when we loop more than once in the while()).< / span > < / div >
< div class = "line" > < a name = "l00773" > < / a > < span class = "lineno" > 773< / span >   < span class = "comment" > // This is not critical, since this code is not used in the default algorithm< / span > < / div >
< div class = "line" > < a name = "l00774" > < / a > < span class = "lineno" > 774< / span >   < span class = "comment" > // computation. The issue is twofold:< / span > < / div >
< div class = "line" > < a name = "l00775" > < / a > < span class = "lineno" > 775< / span >   < span class = "comment" > // - InitializeActiveNodeContainer() doesn' t push the nodes in< / span > < / div >
< div class = "line" > < a name = "l00776" > < / a > < span class = "lineno" > 776< / span >   < span class = "comment" > // the correct order.< / span > < / div >
< div class = "line" > < a name = "l00777" > < / a > < span class = "lineno" > 777< / span >   < span class = "comment" > // - PushFlowExcessBackToSource() may break the node potential properties, and< / span > < / div >
< div class = "line" > < a name = "l00778" > < / a > < span class = "lineno" > 778< / span >   < span class = "comment" > // we will need a call to GlobalUpdate() to fix that.< / span > < / div >
< div class = "line" > < a name = "l00779" > < / a > < span class = "lineno" > 779< / span >   < span class = "keywordflow" > while< / span > (SaturateOutgoingArcsFromSource()) {< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00780" > < / a > < span class = "lineno" > 780< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (IsEmptyActiveNodeContainer());< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00781" > < / a > < span class = "lineno" > 781< / span >   InitializeActiveNodeContainer();< / div >
< div class = "line" > < a name = "l00782" > < / a > < span class = "lineno" > 782< / span >   < span class = "keywordflow" > while< / span > (!IsEmptyActiveNodeContainer()) {< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00783" > < / a > < span class = "lineno" > 783< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > node = GetAndRemoveFirstActiveNode();< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00784" > < / a > < span class = "lineno" > 784< / span >   < span class = "keywordflow" > if< / span > (node == source_ || node == sink_) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a name = "l00785" > < / a > < span class = "lineno" > 785< / span >   Discharge(node);< / 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 >   < span class = "keywordflow" > if< / span > (use_two_phase_algorithm_) {< / div >
< div class = "line" > < a name = "l00788" > < / a > < span class = "lineno" > 788< / span >   PushFlowExcessBackToSource();< / div >
< div class = "line" > < a name = "l00789" > < / a > < span class = "lineno" > 789< / span >   }< / div >
< div class = "line" > < a name = "l00790" > < / a > < span class = "lineno" > 790< / span >   }< / div >
< div class = "line" > < a name = "l00791" > < / a > < span class = "lineno" > 791< / span >   }< / div >
< div class = "line" > < a name = "l00792" > < / a > < span class = "lineno" > 792< / span >   < / div >
< div class = "line" > < a name = "l00793" > < / a > < span class = "lineno" > 793< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph> < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00794" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#ad28be43d46715cda54108a189081d139" > 794< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#ad28be43d46715cda54108a189081d139" > GenericMaxFlow< Graph> ::RefineWithGlobalUpdate< / a > () {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00795" > < / a > < span class = "lineno" > 795< / span >   < a class = "code" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / 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 >   < span class = "comment" > // TODO(user): This should be graph_-> num_nodes(), but ebert graph does not< / span > < / div >
< div class = "line" > < a name = "l00798" > < / a > < span class = "lineno" > 798< / span >   < span class = "comment" > // have a correct size if the highest index nodes have no arcs.< / span > < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00799" > < / a > < span class = "lineno" > 799< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > 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 = "l00800" > < / a > < span class = "lineno" > 800< / span >   std::vector< int> skip_active_node;< / div >
< div class = "line" > < a name = "l00801" > < / a > < span class = "lineno" > 801< / span >   < / div >
< div class = "line" > < a name = "l00802" > < / a > < span class = "lineno" > 802< / span >   < span class = "keywordflow" > while< / span > (SaturateOutgoingArcsFromSource()) {< / div >
< div class = "line" > < a name = "l00803" > < / a > < span class = "lineno" > 803< / span >   < span class = "keywordtype" > int< / span > num_skipped;< / div >
< div class = "line" > < a name = "l00804" > < / a > < span class = "lineno" > 804< / span >   < span class = "keywordflow" > do< / span > {< / div >
< div class = "line" > < a name = "l00805" > < / a > < span class = "lineno" > 805< / span >   num_skipped = 0;< / div >
< div class = "line" > < a name = "l00806" > < / a > < span class = "lineno" > 806< / span >   skip_active_node.assign(num_nodes, 0);< / div >
< div class = "line" > < a name = "l00807" > < / a > < span class = "lineno" > 807< / span >   skip_active_node[sink_] = 2;< / div >
< div class = "line" > < a name = "l00808" > < / a > < span class = "lineno" > 808< / span >   skip_active_node[source_] = 2;< / div >
< div class = "line" > < a name = "l00809" > < / a > < span class = "lineno" > 809< / span >   GlobalUpdate();< / div >
< div class = "line" > < a name = "l00810" > < / a > < span class = "lineno" > 810< / span >   < span class = "keywordflow" > while< / span > (!IsEmptyActiveNodeContainer()) {< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00811" > < / a > < span class = "lineno" > 811< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > node = GetAndRemoveFirstActiveNode();< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00812" > < / a > < span class = "lineno" > 812< / span >   < span class = "keywordflow" > if< / span > (skip_active_node[node] > 1) {< / div >
< div class = "line" > < a name = "l00813" > < / a > < span class = "lineno" > 813< / span >   < span class = "keywordflow" > if< / span > (node != sink_ & & node != source_) ++num_skipped;< / div >
< div class = "line" > < a name = "l00814" > < / a > < span class = "lineno" > 814< / span >   < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a name = "l00815" > < / a > < span class = "lineno" > 815< / span >   }< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00816" > < / a > < span class = "lineno" > 816< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > old_height = node_potential_[node];< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00817" > < / a > < span class = "lineno" > 817< / span >   Discharge(node);< / 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 >   < span class = "comment" > // The idea behind this is that if a node height augments by more than< / span > < / div >
< div class = "line" > < a name = "l00820" > < / a > < span class = "lineno" > 820< / span >   < span class = "comment" > // one, then it is likely to push flow back the way it came. This can< / span > < / div >
< div class = "line" > < a name = "l00821" > < / a > < span class = "lineno" > 821< / span >   < span class = "comment" > // lead to very costly loops. A bad case is: source -> n1 -> n2 and n2< / span > < / div >
< div class = "line" > < a name = "l00822" > < / a > < span class = "lineno" > 822< / span >   < span class = "comment" > // just recently isolated from the sink. Then n2 will push flow back to< / span > < / div >
< div class = "line" > < a name = "l00823" > < / a > < span class = "lineno" > 823< / span >   < span class = "comment" > // n1, and n1 to n2 and so on. The height of each node will increase by< / span > < / div >
< div class = "line" > < a name = "l00824" > < / a > < span class = "lineno" > 824< / span >   < span class = "comment" > // steps of two until the height of the source is reached, which can< / span > < / div >
< div class = "line" > < a name = "l00825" > < / a > < span class = "lineno" > 825< / span >   < span class = "comment" > // take a long time. If the chain is longer, the situation is even< / span > < / div >
< div class = "line" > < a name = "l00826" > < / a > < span class = "lineno" > 826< / span >   < span class = "comment" > // worse. The behavior of this heuristic is related to the Gap< / span > < / div >
< div class = "line" > < a name = "l00827" > < / a > < span class = "lineno" > 827< / span >   < span class = "comment" > // heuristic.< / span > < / div >
< div class = "line" > < a name = "l00828" > < / a > < span class = "lineno" > 828< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00829" > < / a > < span class = "lineno" > 829< / span >   < span class = "comment" > // Note that the global update will fix all such cases efficiently. So< / span > < / div >
< div class = "line" > < a name = "l00830" > < / a > < span class = "lineno" > 830< / span >   < span class = "comment" > // the idea is to discharge the active node as much as possible, and< / span > < / div >
< div class = "line" > < a name = "l00831" > < / a > < span class = "lineno" > 831< / span >   < span class = "comment" > // then do a global update.< / span > < / div >
< div class = "line" > < a name = "l00832" > < / a > < span class = "lineno" > 832< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00833" > < / a > < span class = "lineno" > 833< / span >   < span class = "comment" > // We skip a node when this condition was true 2 times to avoid doing a< / span > < / div >
< div class = "line" > < a name = "l00834" > < / a > < span class = "lineno" > 834< / span >   < span class = "comment" > // global update too frequently.< / span > < / div >
< div class = "line" > < a name = "l00835" > < / a > < span class = "lineno" > 835< / span >   < span class = "keywordflow" > if< / span > (node_potential_[node] > old_height + 1) {< / div >
< div class = "line" > < a name = "l00836" > < / a > < span class = "lineno" > 836< / span >   ++skip_active_node[node];< / div >
< div class = "line" > < a name = "l00837" > < / a > < span class = "lineno" > 837< / span >   }< / div >
< div class = "line" > < a name = "l00838" > < / a > < span class = "lineno" > 838< / span >   }< / div >
< div class = "line" > < a name = "l00839" > < / a > < span class = "lineno" > 839< / span >   } < span class = "keywordflow" > while< / span > (num_skipped > 0);< / div >
< div class = "line" > < a name = "l00840" > < / a > < span class = "lineno" > 840< / span >   < span class = "keywordflow" > if< / span > (use_two_phase_algorithm_) {< / div >
< div class = "line" > < a name = "l00841" > < / a > < span class = "lineno" > 841< / span >   PushFlowExcessBackToSource();< / div >
< div class = "line" > < a name = "l00842" > < / a > < span class = "lineno" > 842< / span >   }< / 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 >   }< / div >
< div class = "line" > < a name = "l00845" > < / a > < span class = "lineno" > 845< / span >   < / div >
< div class = "line" > < a name = "l00846" > < / a > < span class = "lineno" > 846< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph> < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00847" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#af4b75883cbba15f442c627f5da96f470" > 847< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#af4b75883cbba15f442c627f5da96f470" > GenericMaxFlow< Graph> ::Discharge< / a > (< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > node) {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00848" > < / a > < span class = "lineno" > 848< / span >   < a class = "code" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00849" > < / a > < span class = "lineno" > 849< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > num_nodes = graph_-> num_nodes();< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00850" > < / a > < span class = "lineno" > 850< / span >   < span class = "keywordflow" > while< / span > (< span class = "keyword" > true< / span > ) {< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00851" > < / a > < span class = "lineno" > 851< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (IsActive(node));< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00852" > < / a > < span class = "lineno" > 852< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a277838ded7171a604a67babdbea05988" > OutgoingOrOppositeIncomingArcIterator< / a > it(*graph_, node,< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00853" > < / a > < span class = "lineno" > 853< / span >   first_admissible_arc_[node]);< / div >
< div class = "line" > < a name = "l00854" > < / a > < span class = "lineno" > 854< / span >   it.Ok(); it.Next()) {< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00855" > < / a > < span class = "lineno" > 855< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > arc = it.Index();< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00856" > < / a > < span class = "lineno" > 856< / span >   < span class = "keywordflow" > if< / span > (IsAdmissible(arc)) {< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00857" > < / a > < span class = "lineno" > 857< / span >   < a class = "code" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (IsActive(node));< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00858" > < / a > < span class = "lineno" > 858< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > < a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > = Head(arc);< / div >
< div class = "line" > < a name = "l00859" > < / a > < span class = "lineno" > 859< / span >   < span class = "keywordflow" > if< / span > (node_excess_[< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ] == 0) {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00860" > < / a > < span class = "lineno" > 860< / span >   < span class = "comment" > // The push below will make the node active for sure. Note that we may< / span > < / div >
< div class = "line" > < a name = "l00861" > < / a > < span class = "lineno" > 861< / span >   < span class = "comment" > // push the sink_, but that is handled properly in Refine().< / span > < / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00862" > < / a > < span class = "lineno" > 862< / span >   PushActiveNode(< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > );< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00863" > < / a > < span class = "lineno" > 863< / span >   }< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00864" > < / a > < span class = "lineno" > 864< / 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 = "l00865" > < / a > < span class = "lineno" > 865< / span >   < a class = "code" href = "alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045" > std::min< / a > (node_excess_[node], residual_arc_capacity_[arc]);< / div >
< div class = "line" > < a name = "l00866" > < / a > < span class = "lineno" > 866< / span >   PushFlow(< a class = "code" href = "resource_8cc.html#af12056bc2a8e3ec563f0940d87abbd2e" > delta< / a > , arc);< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00867" > < / a > < span class = "lineno" > 867< / span >   < span class = "keywordflow" > if< / span > (node_excess_[node] == 0) {< / div >
< div class = "line" > < a name = "l00868" > < / a > < span class = "lineno" > 868< / span >   first_admissible_arc_[node] = arc; < span class = "comment" > // arc may still be admissible.< / span > < / div >
< div class = "line" > < a name = "l00869" > < / a > < span class = "lineno" > 869< / span >   < span class = "keywordflow" > return< / 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 >   Relabel(node);< / div >
< div class = "line" > < a name = "l00874" > < / a > < span class = "lineno" > 874< / span >   < span class = "keywordflow" > if< / span > (use_two_phase_algorithm_ & & node_potential_[node] > = num_nodes) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00875" > < / a > < span class = "lineno" > 875< / span >   }< / div >
< div class = "line" > < a name = "l00876" > < / a > < span class = "lineno" > 876< / span >   }< / 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 >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph> < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00879" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#a187f8b09657eacdfef77202c595543f6" > 879< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a187f8b09657eacdfef77202c595543f6" > GenericMaxFlow< Graph> ::Relabel< / a > (< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > node) {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00880" > < / a > < span class = "lineno" > 880< / span >   < a class = "code" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a name = "l00881" > < / a > < span class = "lineno" > 881< / span >   < span class = "comment" > // Because we use a relaxed version, this is no longer true if the< / span > < / div >
< div class = "line" > < a name = "l00882" > < / a > < span class = "lineno" > 882< / span >   < span class = "comment" > // first_admissible_arc_[node] was not actually the first arc!< / span > < / div >
< div class = "line" > < a name = "l00883" > < / a > < span class = "lineno" > 883< / span >   < span class = "comment" > // DCHECK(CheckRelabelPrecondition(node));< / span > < / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00884" > < / a > < span class = "lineno" > 884< / span >   < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a798f41062d76af3baabada0c4c0580ea" > NodeHeight< / a > min_height = < a class = "code" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::numeric_limits< NodeHeight> ::max< / a > ();< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00885" > < / a > < span class = "lineno" > 885< / span >   < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > first_admissible_arc = Graph::kNilArc;< / div >
< div class = "line" > < a name = "l00886" > < / a > < span class = "lineno" > 886< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a277838ded7171a604a67babdbea05988" > OutgoingOrOppositeIncomingArcIterator< / a > it(*graph_, node); it.Ok();< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00887" > < / a > < span class = "lineno" > 887< / span >   it.Next()) {< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00888" > < / a > < span class = "lineno" > 888< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > arc = it.Index();< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00889" > < / a > < span class = "lineno" > 889< / span >   < span class = "keywordflow" > if< / span > (residual_arc_capacity_[arc] > 0) {< / div >
< div class = "line" > < a name = "l00890" > < / a > < span class = "lineno" > 890< / span >   < span class = "comment" > // Update min_height only for arcs with available capacity.< / span > < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00891" > < / a > < span class = "lineno" > 891< / span >   < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a798f41062d76af3baabada0c4c0580ea" > NodeHeight< / a > head_height = node_potential_[Head(arc)];< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00892" > < / a > < span class = "lineno" > 892< / span >   < span class = "keywordflow" > if< / span > (head_height < min_height) {< / div >
< div class = "line" > < a name = "l00893" > < / a > < span class = "lineno" > 893< / span >   min_height = head_height;< / div >
< div class = "line" > < a name = "l00894" > < / a > < span class = "lineno" > 894< / span >   first_admissible_arc = arc;< / div >
< div class = "line" > < a name = "l00895" > < / a > < span class = "lineno" > 895< / span >   < / div >
< div class = "line" > < a name = "l00896" > < / a > < span class = "lineno" > 896< / span >   < span class = "comment" > // We found an admissible arc at the current height, just stop there.< / span > < / div >
< div class = "line" > < a name = "l00897" > < / a > < span class = "lineno" > 897< / span >   < span class = "comment" > // This is the true first_admissible_arc_[node].< / span > < / div >
< div class = "line" > < a name = "l00898" > < / a > < span class = "lineno" > 898< / span >   < span class = "keywordflow" > if< / span > (min_height + 1 == node_potential_[node]) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00899" > < / a > < span class = "lineno" > 899< / span >   }< / 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 >   }< / div >
2020-11-18 14:53:30 +01:00
< div class = "line" > < a name = "l00902" > < / a > < span class = "lineno" > 902< / span >   < a class = "code" href = "base_2logging_8h.html#a46e69120fbd3b36e6960e096d23b66f0" > DCHECK_NE< / a > (first_admissible_arc, Graph::kNilArc);< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00903" > < / a > < span class = "lineno" > 903< / span >   node_potential_[node] = min_height + 1;< / div >
< div class = "line" > < a name = "l00904" > < / a > < span class = "lineno" > 904< / span >   < / div >
< div class = "line" > < a name = "l00905" > < / a > < span class = "lineno" > 905< / span >   < span class = "comment" > // Note that after a Relabel(), the loop will continue in Discharge(), and< / span > < / div >
< div class = "line" > < a name = "l00906" > < / a > < span class = "lineno" > 906< / span >   < span class = "comment" > // we are sure that all the arcs before first_admissible_arc are not< / span > < / div >
< div class = "line" > < a name = "l00907" > < / a > < span class = "lineno" > 907< / span >   < span class = "comment" > // admissible since their height is > min_height.< / span > < / div >
< div class = "line" > < a name = "l00908" > < / a > < span class = "lineno" > 908< / span >   first_admissible_arc_[node] = first_admissible_arc;< / div >
< div class = "line" > < a name = "l00909" > < / a > < span class = "lineno" > 909< / span >   }< / div >
< div class = "line" > < a name = "l00910" > < / a > < span class = "lineno" > 910< / span >   < / div >
< div class = "line" > < a name = "l00911" > < / a > < span class = "lineno" > 911< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph> < / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00912" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#ae5ff1c955df682c39482f2cc5e23e900" > 912< / a > < / span >   < span class = "keyword" > typename< / span > < a class = "code" href = "namespaceoperations__research.html#aecf320bda6e95d1edaf3a546673e3e6b" > Graph::ArcIndex< / a > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#ae5ff1c955df682c39482f2cc5e23e900" > GenericMaxFlow< Graph> ::Opposite< / a > (< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > arc)< span class = "keyword" > const < / span > {< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00913" > < / a > < span class = "lineno" > 913< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "structoperations__research_1_1_graphs.html#ae9cc106c6139c0b4e57057594bf56ea8" > Graphs< Graph> ::OppositeArc< / a > (*graph_, arc);< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00914" > < / a > < span class = "lineno" > 914< / span >   }< / div >
< div class = "line" > < a name = "l00915" > < / a > < span class = "lineno" > 915< / span >   < / div >
< div class = "line" > < a name = "l00916" > < / a > < span class = "lineno" > 916< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph> < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00917" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#af3a76f97fe869af7137bbc9a165353b1" > 917< / a > < / span >   < span class = "keywordtype" > bool< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#af3a76f97fe869af7137bbc9a165353b1" > GenericMaxFlow< Graph> ::IsArcDirect< / a > (< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > arc)< span class = "keyword" > const < / span > {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00918" > < / a > < span class = "lineno" > 918< / span >   < span class = "keywordflow" > return< / span > IsArcValid(arc) & & arc > = 0;< / div >
< div class = "line" > < a name = "l00919" > < / a > < span class = "lineno" > 919< / span >   }< / div >
< div class = "line" > < a name = "l00920" > < / a > < span class = "lineno" > 920< / span >   < / div >
< div class = "line" > < a name = "l00921" > < / a > < span class = "lineno" > 921< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph> < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00922" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#ac17ea9ef2dc1b5eace76f625abe36475" > 922< / a > < / span >   < span class = "keywordtype" > bool< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#ac17ea9ef2dc1b5eace76f625abe36475" > GenericMaxFlow< Graph> ::IsArcValid< / a > (< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > arc)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00923" > < / a > < span class = "lineno" > 923< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "structoperations__research_1_1_graphs.html#ae02cd8602383e4fb48a8a933325db5fd" > Graphs< Graph> ::IsArcValid< / a > (*graph_, arc);< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00924" > < / a > < span class = "lineno" > 924< / span >   }< / 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 >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph> < / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00927" > < / a > < span class = "lineno" > 927< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "namespaceoperations__research.html#a259d58fc853dd928f2148dbcf1ef25cd" > FlowQuantity< / a > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html" > GenericMaxFlow< Graph> ::kMaxFlowQuantity< / a > =< / div >
< div class = "line" > < a name = "l00928" > < / a > < span class = "lineno" > 928< / span >   < a class = "code" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::numeric_limits< FlowQuantity> ::max< / a > ();< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00929" > < / a > < span class = "lineno" > 929< / span >   < / div >
< div class = "line" > < a name = "l00930" > < / a > < span class = "lineno" > 930< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph> < / div >
< div class = "line" > < a name = "l00931" > < / a > < span class = "lineno" > 931< / span >   < span class = "keyword" > template< / span > < < span class = "keywordtype" > bool< / span > reverse> < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00932" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#ac0290c8f8892c50d7b29e9770fda4923" > 932< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#ac0290c8f8892c50d7b29e9770fda4923" > GenericMaxFlow< Graph> ::ComputeReachableNodes< / a > (< / div >
< div class = "line" > < a name = "l00933" > < / a > < span class = "lineno" > 933< / span >   < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > start, std::vector< NodeIndex> * result) {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00934" > < / a > < span class = "lineno" > 934< / span >   < span class = "comment" > // If start is not a valid node index, it can reach only itself.< / span > < / div >
< div class = "line" > < a name = "l00935" > < / a > < span class = "lineno" > 935< / span >   < span class = "comment" > // Note(user): This is needed because source and sink are given independently< / span > < / div >
< div class = "line" > < a name = "l00936" > < / a > < span class = "lineno" > 936< / span >   < span class = "comment" > // of the graph and sometimes before it is even constructed.< / span > < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00937" > < / a > < span class = "lineno" > 937< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > num_nodes = graph_-> num_nodes();< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00938" > < / a > < span class = "lineno" > 938< / span >   < span class = "keywordflow" > if< / span > (start > = num_nodes) {< / div >
< div class = "line" > < a name = "l00939" > < / a > < span class = "lineno" > 939< / span >   result-> clear();< / div >
< div class = "line" > < a name = "l00940" > < / a > < span class = "lineno" > 940< / span >   result-> push_back(start);< / div >
< div class = "line" > < a name = "l00941" > < / a > < span class = "lineno" > 941< / span >   < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a name = "l00942" > < / a > < span class = "lineno" > 942< / span >   }< / div >
< div class = "line" > < a name = "l00943" > < / a > < span class = "lineno" > 943< / span >   bfs_queue_.clear();< / div >
< div class = "line" > < a name = "l00944" > < / a > < span class = "lineno" > 944< / span >   node_in_bfs_queue_.assign(num_nodes, < span class = "keyword" > false< / 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 >   < span class = "keywordtype" > int< / span > queue_index = 0;< / div >
< div class = "line" > < a name = "l00947" > < / a > < span class = "lineno" > 947< / span >   bfs_queue_.push_back(start);< / div >
< div class = "line" > < a name = "l00948" > < / a > < span class = "lineno" > 948< / span >   node_in_bfs_queue_[start] = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00949" > < / a > < span class = "lineno" > 949< / span >   < span class = "keywordflow" > while< / span > (queue_index != bfs_queue_.size()) {< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00950" > < / a > < span class = "lineno" > 950< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > node = bfs_queue_[queue_index];< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00951" > < / a > < span class = "lineno" > 951< / span >   ++queue_index;< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00952" > < / a > < span class = "lineno" > 952< / span >   < span class = "keywordflow" > for< / span > (< a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a277838ded7171a604a67babdbea05988" > OutgoingOrOppositeIncomingArcIterator< / a > it(*graph_, node); it.Ok();< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00953" > < / a > < span class = "lineno" > 953< / span >   it.Next()) {< / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00954" > < / a > < span class = "lineno" > 954< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > ArcIndex< / a > arc = it.Index();< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00955" > < / a > < span class = "lineno" > 955< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > NodeIndex< / a > < a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > = Head(arc);< / div >
< div class = "line" > < a name = "l00956" > < / a > < span class = "lineno" > 956< / span >   < span class = "keywordflow" > if< / span > (node_in_bfs_queue_[< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ]) < span class = "keywordflow" > continue< / span > ;< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00957" > < / a > < span class = "lineno" > 957< / span >   < span class = "keywordflow" > if< / span > (residual_arc_capacity_[reverse ? Opposite(arc) : arc] == 0) < span class = "keywordflow" > continue< / span > ;< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00958" > < / a > < span class = "lineno" > 958< / span >   node_in_bfs_queue_[< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > ] = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00959" > < / a > < span class = "lineno" > 959< / span >   bfs_queue_.push_back(< a class = "code" href = "routing__flow_8cc.html#afca32f65388659a4b0956496169488b4" > head< / a > );< / div >
2020-09-02 09:42:51 +02:00
< 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 >   }< / div >
< div class = "line" > < a name = "l00962" > < / a > < span class = "lineno" > 962< / span >   *result = bfs_queue_;< / div >
< div class = "line" > < a name = "l00963" > < / a > < span class = "lineno" > 963< / span >   }< / div >
< div class = "line" > < a name = "l00964" > < / a > < span class = "lineno" > 964< / span >   < / div >
< div class = "line" > < a name = "l00965" > < / a > < span class = "lineno" > 965< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > Graph> < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00966" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1_generic_max_flow.html#afbd2be8210b3c04ac5ee3a879f1e62de" > 966< / a > < / span >   FlowModel < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html#afbd2be8210b3c04ac5ee3a879f1e62de" > GenericMaxFlow< Graph> ::CreateFlowModel< / a > () {< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00967" > < / a > < span class = "lineno" > 967< / span >   FlowModel < a class = "code" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > ;< / div >
< div class = "line" > < a name = "l00968" > < / a > < span class = "lineno" > 968< / span >   < a class = "code" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > .set_problem_type(FlowModel::MAX_FLOW);< / div >
< div class = "line" > < a name = "l00969" > < / a > < span class = "lineno" > 969< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > n = 0; n < graph_-> num_nodes(); ++n) {< / div >
< div class = "line" > < a name = "l00970" > < / a > < span class = "lineno" > 970< / span >   Node* node = < a class = "code" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > .add_node();< / div >
< div class = "line" > < a name = "l00971" > < / a > < span class = "lineno" > 971< / span >   node-> set_id(n);< / div >
< div class = "line" > < a name = "l00972" > < / a > < span class = "lineno" > 972< / span >   < span class = "keywordflow" > if< / span > (n == source_) node-> set_supply(1);< / div >
< div class = "line" > < a name = "l00973" > < / a > < span class = "lineno" > 973< / span >   < span class = "keywordflow" > if< / span > (n == sink_) node-> set_supply(-1);< / div >
< div class = "line" > < a name = "l00974" > < / a > < span class = "lineno" > 974< / span >   }< / div >
2021-04-27 23:00:03 +02:00
< div class = "line" > < a name = "l00975" > < / a > < span class = "lineno" > 975< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > < a class = "code" href = "constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6" > a< / a > = 0; < a class = "code" href = "constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6" > a< / a > < graph_-> num_arcs(); ++< a class = "code" href = "constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6" > a< / a > ) {< / div >
< div class = "line" > < a name = "l00976" > < / a > < span class = "lineno" > 976< / span >   < a class = "code" href = "namespaceoperations__research.html#a7deeae530369e107f9d91c1a189f451f" > Arc< / a > * arc = < a class = "code" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > .add_arc();< / div >
< div class = "line" > < a name = "l00977" > < / a > < span class = "lineno" > 977< / span >   arc-> set_tail_node_id(graph_-> Tail(< a class = "code" href = "constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6" > a< / a > ));< / div >
< div class = "line" > < a name = "l00978" > < / a > < span class = "lineno" > 978< / span >   arc-> set_head_node_id(graph_-> Head(< a class = "code" href = "constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6" > a< / a > ));< / div >
< div class = "line" > < a name = "l00979" > < / a > < span class = "lineno" > 979< / span >   arc-> set_capacity(Capacity(< a class = "code" href = "constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6" > a< / a > ));< / div >
2020-09-02 09:42:51 +02:00
< 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 = "keywordflow" > return< / span > < a class = "code" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > ;< / div >
< div class = "line" > < a name = "l00982" > < / a > < span class = "lineno" > 982< / span >   }< / div >
< div class = "line" > < a name = "l00983" > < / a > < span class = "lineno" > 983< / span >   < / div >
< div class = "line" > < a name = "l00984" > < / a > < span class = "lineno" > 984< / span >   < span class = "comment" > // Explicit instanciations that can be used by a client.< / span > < / div >
< div class = "line" > < a name = "l00985" > < / a > < span class = "lineno" > 985< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00986" > < / a > < span class = "lineno" > 986< / span >   < span class = "comment" > // TODO(user): moves this code out of a .cc file and include it at the end of< / span > < / div >
< div class = "line" > < a name = "l00987" > < / a > < span class = "lineno" > 987< / span >   < span class = "comment" > // the header so it can work with any graph implementation ?< / span > < / div >
2020-10-09 12:00:09 +02:00
< div class = "line" > < a name = "l00988" > < / a > < span class = "lineno" > 988< / span >   < span class = "keyword" > template< / span > < span class = "keyword" > class < / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html" > GenericMaxFlow< StarGraph> < / a > ;< / div >
< div class = "line" > < a name = "l00989" > < / a > < span class = "lineno" > 989< / span >   < span class = "keyword" > template< / span > < span class = "keyword" > class < / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html" > GenericMaxFlow< ::util::ReverseArcListGraph< > < / a > > ;< / div >
< div class = "line" > < a name = "l00990" > < / a > < span class = "lineno" > 990< / span >   < span class = "keyword" > template< / span > < span class = "keyword" > class < / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html" > GenericMaxFlow< ::util::ReverseArcStaticGraph< > < / a > > ;< / div >
< div class = "line" > < a name = "l00991" > < / a > < span class = "lineno" > 991< / span >   < span class = "keyword" > template< / span > < span class = "keyword" > class < / span > < a class = "code" href = "classoperations__research_1_1_generic_max_flow.html" > GenericMaxFlow< ::util::ReverseArcMixedGraph< > < / a > > ;< / div >
2020-09-02 09:42:51 +02:00
< div class = "line" > < a name = "l00992" > < / a > < span class = "lineno" > 992< / span >   < / div >
< div class = "line" > < a name = "l00993" > < / a > < span class = "lineno" > 993< / span >   } < span class = "comment" > // namespace operations_research< / span > < / div >
2021-04-27 23:00:03 +02:00
< 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_a46e69120fbd3b36e6960e096d23b66f0" > < div class = "ttname" > < a href = "base_2logging_8h.html#a46e69120fbd3b36e6960e096d23b66f0" > DCHECK_NE< / a > < / div > < div class = "ttdeci" > #define DCHECK_NE(val1, val2)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00894" > base/logging.h:894< / 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_generic_max_flow_html" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html" > operations_research::GenericMaxFlow< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8h_source.html#l00315" > max_flow.h:315< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_a0d012d3907b8306ddfc1a7089342fbe2" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#a0d012d3907b8306ddfc1a7089342fbe2" > operations_research::GenericMaxFlow< StarGraph > ::OutgoingArcIterator< / a > < / div > < div class = "ttdeci" > Graph::OutgoingArcIterator OutgoingArcIterator< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8h_source.html#l00319" > max_flow.h:319< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_a0f81f6e049ffb2b2a27c8e45dc0a25a0" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#a0f81f6e049ffb2b2a27c8e45dc0a25a0" > operations_research::GenericMaxFlow::InitializePreflow< / a > < / div > < div class = "ttdeci" > void InitializePreflow()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00379" > max_flow.cc:379< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_a10bcb8f7f63b390821ae5e95fe4822cc" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#a10bcb8f7f63b390821ae5e95fe4822cc" > operations_research::GenericMaxFlow::graph< / a > < / div > < div class = "ttdeci" > const Graph * graph() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8h_source.html#l00338" > max_flow.h:338< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_a12ffc143b8d66de80c07572cc8509037" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#a12ffc143b8d66de80c07572cc8509037" > operations_research::GenericMaxFlow::CheckInputConsistency< / a > < / div > < div class = "ttdeci" > bool CheckInputConsistency() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00163" > max_flow.cc:163< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_a187f8b09657eacdfef77202c595543f6" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#a187f8b09657eacdfef77202c595543f6" > operations_research::GenericMaxFlow::Relabel< / a > < / div > < div class = "ttdeci" > void Relabel(NodeIndex node)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00879" > max_flow.cc:879< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_a19193cb3045a42a4154d3860b92dc65b" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#a19193cb3045a42a4154d3860b92dc65b" > operations_research::GenericMaxFlow::active_nodes_< / a > < / div > < div class = "ttdeci" > std::vector< NodeIndex > active_nodes_< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8h_source.html#l00590" > max_flow.h:590< / 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_a2212ce00ee245370c5cb71234244027a" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#a2212ce00ee245370c5cb71234244027a" > operations_research::GenericMaxFlow::DebugString< / a > < / div > < div class = "ttdeci" > std::string DebugString(const std::string & context, ArcIndex arc) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00318" > max_flow.cc:318< / a > < / div > < / div >
2020-10-09 12:00:09 +02:00
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_a24f768765349e100ca2ef7697d1b52d5" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#a24f768765349e100ca2ef7697d1b52d5" > operations_research::GenericMaxFlow::SaturateOutgoingArcsFromSource< / a > < / div > < div class = "ttdeci" > bool SaturateOutgoingArcsFromSource()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00675" > max_flow.cc:675< / a > < / div > < / div >
2021-01-26 11:28:50 +01:00
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_a277838ded7171a604a67babdbea05988" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#a277838ded7171a604a67babdbea05988" > operations_research::GenericMaxFlow::OutgoingOrOppositeIncomingArcIterator< / a > < / div > < div class = "ttdeci" > Graph::OutgoingOrOppositeIncomingArcIterator OutgoingOrOppositeIncomingArcIterator< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8h_source.html#l00321" > max_flow.h:321< / a > < / div > < / div >
2020-10-09 12:00:09 +02:00
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_a28b52dfd2da6e91a8e1e0d039c1d4154" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#a28b52dfd2da6e91a8e1e0d039c1d4154" > operations_research::GenericMaxFlow::GlobalUpdate< / a > < / div > < div class = "ttdeci" > void GlobalUpdate()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00565" > max_flow.cc:565< / a > < / div > < / div >
2021-01-26 11:28:50 +01:00
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_a2a555ba2dc0a468e6fee4a0665b12272" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#a2a555ba2dc0a468e6fee4a0665b12272" > operations_research::GenericMaxFlow::CheckRelabelPrecondition< / a > < / div > < div class = "ttdeci" > bool CheckRelabelPrecondition(NodeIndex node) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00307" > max_flow.cc:307< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_a2b834b1bfbaef46bbf4a3f991a26f9a3" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#a2b834b1bfbaef46bbf4a3f991a26f9a3" > operations_research::GenericMaxFlow::bfs_queue_< / a > < / div > < div class = "ttdeci" > std::vector< NodeIndex > bfs_queue_< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8h_source.html#l00611" > max_flow.h:611< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_a3702055ec6affa60e6862cd0e63f9a7b" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#a3702055ec6affa60e6862cd0e63f9a7b" > operations_research::GenericMaxFlow::first_admissible_arc_< / a > < / div > < div class = "ttdeci" > ArcIndexArray first_admissible_arc_< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8h_source.html#l00584" > max_flow.h:584< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_a38f480b60f3812345680d2267770ee5c" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#a38f480b60f3812345680d2267770ee5c" > operations_research::GenericMaxFlow::SetArcFlow< / a > < / div > < div class = "ttdeci" > void SetArcFlow(ArcIndex arc, FlowQuantity new_flow)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00209" > max_flow.cc:209< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_a3a4afd902c22768de7955ba9983fb282" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#a3a4afd902c22768de7955ba9983fb282" > operations_research::GenericMaxFlow::PushFlowExcessBackToSource< / a > < / div > < div class = "ttdeci" > void PushFlowExcessBackToSource()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00410" > max_flow.cc:410< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_a44aa9e2f47277c91d8064c7126a2ff48" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#a44aa9e2f47277c91d8064c7126a2ff48" > operations_research::GenericMaxFlow::ArcIndex< / a > < / div > < div class = "ttdeci" > Graph::ArcIndex ArcIndex< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8h_source.html#l00318" > max_flow.h:318< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_a4ddaeee9414a17257bb052c459325caf" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#a4ddaeee9414a17257bb052c459325caf" > operations_research::GenericMaxFlow::NodeIndex< / a > < / div > < div class = "ttdeci" > Graph::NodeIndex NodeIndex< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8h_source.html#l00317" > max_flow.h:317< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_a4ede8a987bfe0972a51942bbca22d4c1" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#a4ede8a987bfe0972a51942bbca22d4c1" > operations_research::GenericMaxFlow::GetSourceSideMinCut< / a > < / div > < div class = "ttdeci" > void GetSourceSideMinCut(std::vector< NodeIndex > *result)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00225" > max_flow.cc:225< / a > < / div > < / div >
2020-10-09 12:00:09 +02:00
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_a5b7429be4ec8b98658d0b035261b1483" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#a5b7429be4ec8b98658d0b035261b1483" > operations_research::GenericMaxFlow::node_potential_< / a > < / div > < div class = "ttdeci" > NodeHeightArray node_potential_< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8h_source.html#l00563" > max_flow.h:563< / a > < / div > < / div >
2021-01-26 11:28:50 +01:00
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_a7316c54af53df2e1f2ebc3d7fa1d5c45" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#a7316c54af53df2e1f2ebc3d7fa1d5c45" > operations_research::GenericMaxFlow::InitializeActiveNodeContainer< / a > < / div > < div class = "ttdeci" > void InitializeActiveNodeContainer()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00740" > max_flow.cc:740< / a > < / div > < / div >
2020-10-09 12:00:09 +02:00
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_a798f41062d76af3baabada0c4c0580ea" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#a798f41062d76af3baabada0c4c0580ea" > operations_research::GenericMaxFlow::NodeHeight< / a > < / div > < div class = "ttdeci" > NodeIndex NodeHeight< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8h_source.html#l00327" > max_flow.h:327< / a > < / div > < / div >
2021-01-26 11:28:50 +01:00
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_a7c6fc06ca542eed0ff0b6ed4b1ecbcda" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#a7c6fc06ca542eed0ff0b6ed4b1ecbcda" > operations_research::GenericMaxFlow::stats_< / a > < / div > < div class = "ttdeci" > StatsGroup stats_< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8h_source.html#l00641" > max_flow.h:641< / a > < / div > < / div >
2020-10-09 12:00:09 +02:00
< 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 >
2021-01-26 11:28:50 +01:00
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_aac87a51b41d88b6976a12007bae9b91d" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#aac87a51b41d88b6976a12007bae9b91d" > operations_research::GenericMaxFlow::CheckResult< / a > < / div > < div class = "ttdeci" > bool CheckResult() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00236" > max_flow.cc:236< / a > < / div > < / div >
2020-10-09 12:00:09 +02:00
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_ab478e83cea51fd1e9656030ea4667286" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#ab478e83cea51fd1e9656030ea4667286" > operations_research::GenericMaxFlow::residual_arc_capacity_< / a > < / div > < div class = "ttdeci" > QuantityArray residual_arc_capacity_< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8h_source.html#l00581" > max_flow.h:581< / a > < / div > < / div >
2021-01-26 11:28:50 +01:00
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_abedc5621560431c2527859bd5d1ab8fc" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#abedc5621560431c2527859bd5d1ab8fc" > operations_research::GenericMaxFlow::PushFlow< / a > < / div > < div class = "ttdeci" > void PushFlow(FlowQuantity flow, ArcIndex arc)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00718" > max_flow.cc:718< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_ac0290c8f8892c50d7b29e9770fda4923" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#ac0290c8f8892c50d7b29e9770fda4923" > operations_research::GenericMaxFlow::ComputeReachableNodes< / a > < / div > < div class = "ttdeci" > void ComputeReachableNodes(NodeIndex start, std::vector< NodeIndex > *result)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00932" > max_flow.cc:932< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_ac17ea9ef2dc1b5eace76f625abe36475" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#ac17ea9ef2dc1b5eace76f625abe36475" > operations_research::GenericMaxFlow::IsArcValid< / a > < / div > < div class = "ttdeci" > bool IsArcValid(ArcIndex arc) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00922" > max_flow.cc:922< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_acef9fcefb0d5124677a8a9b460c30410" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#acef9fcefb0d5124677a8a9b460c30410" > operations_research::GenericMaxFlow::GenericMaxFlow< / a > < / div > < div class = "ttdeci" > GenericMaxFlow(const Graph *graph, NodeIndex source, NodeIndex sink)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00125" > max_flow.cc:125< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_ad28be43d46715cda54108a189081d139" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#ad28be43d46715cda54108a189081d139" > operations_research::GenericMaxFlow::RefineWithGlobalUpdate< / a > < / div > < div class = "ttdeci" > void RefineWithGlobalUpdate()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00794" > max_flow.cc:794< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_ad3f0f2aad2e5ba39481e3aad8de1fcda" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#ad3f0f2aad2e5ba39481e3aad8de1fcda" > operations_research::GenericMaxFlow::AugmentingPathExists< / a > < / div > < div class = "ttdeci" > bool AugmentingPathExists() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00278" > max_flow.cc:278< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_ad45b094d532baccee95649c24192f87a" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#ad45b094d532baccee95649c24192f87a" > operations_research::GenericMaxFlow::Refine< / a > < / div > < div class = "ttdeci" > void Refine()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00755" > max_flow.cc:755< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_ad88eea96f82ba29e252f3e07cdb84378" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#ad88eea96f82ba29e252f3e07cdb84378" > operations_research::GenericMaxFlow::graph_< / a > < / div > < div class = "ttdeci" > const Graph * graph_< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8h_source.html#l00547" > max_flow.h:547< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_ad8ca9f0f372e03f5cf3af1e163230792" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#ad8ca9f0f372e03f5cf3af1e163230792" > operations_research::GenericMaxFlow::GetSinkSideMinCut< / a > < / div > < div class = "ttdeci" > void GetSinkSideMinCut(std::vector< NodeIndex > *result)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00231" > max_flow.cc:231< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_ae5ff1c955df682c39482f2cc5e23e900" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#ae5ff1c955df682c39482f2cc5e23e900" > operations_research::GenericMaxFlow::Opposite< / a > < / div > < div class = "ttdeci" > ArcIndex Opposite(ArcIndex arc) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00912" > max_flow.cc:912< / a > < / div > < / div >
2020-10-09 12:00:09 +02:00
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_af3a76f97fe869af7137bbc9a165353b1" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#af3a76f97fe869af7137bbc9a165353b1" > operations_research::GenericMaxFlow::IsArcDirect< / a > < / div > < div class = "ttdeci" > bool IsArcDirect(ArcIndex arc) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00917" > max_flow.cc:917< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_af4b75883cbba15f442c627f5da96f470" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#af4b75883cbba15f442c627f5da96f470" > operations_research::GenericMaxFlow::Discharge< / a > < / div > < div class = "ttdeci" > void Discharge(NodeIndex node)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00847" > max_flow.cc:847< / a > < / div > < / div >
2021-01-26 11:28:50 +01:00
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_af63274e5211be9578b29f56f29936964" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#af63274e5211be9578b29f56f29936964" > operations_research::GenericMaxFlow::node_excess_< / a > < / div > < div class = "ttdeci" > QuantityArray node_excess_< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8h_source.html#l00550" > max_flow.h:550< / a > < / div > < / div >
2020-10-09 12:00:09 +02:00
< div class = "ttc" id = "aclassoperations__research_1_1_generic_max_flow_html_afbd2be8210b3c04ac5ee3a879f1e62de" > < div class = "ttname" > < a href = "classoperations__research_1_1_generic_max_flow.html#afbd2be8210b3c04ac5ee3a879f1e62de" > operations_research::GenericMaxFlow::CreateFlowModel< / a > < / div > < div class = "ttdeci" > FlowModel CreateFlowModel()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00966" > max_flow.cc:966< / a > < / div > < / div >
2021-01-26 11:28:50 +01:00
< div class = "ttc" id = "aclassoperations__research_1_1_simple_max_flow_html_a0b218e6bdef5560b441d7dc1b47d897f" > < div class = "ttname" > < a href = "classoperations__research_1_1_simple_max_flow.html#a0b218e6bdef5560b441d7dc1b47d897f" > operations_research::SimpleMaxFlow::SimpleMaxFlow< / a > < / div > < div class = "ttdeci" > SimpleMaxFlow()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00025" > max_flow.cc:25< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_simple_max_flow_html_a2a420ad8221c326064736ccf148d2f93" > < div class = "ttname" > < a href = "classoperations__research_1_1_simple_max_flow.html#a2a420ad8221c326064736ccf148d2f93" > operations_research::SimpleMaxFlow::Flow< / a > < / div > < div class = "ttdeci" > FlowQuantity Flow(ArcIndex arc) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00107" > max_flow.cc:107< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_simple_max_flow_html_a3be0f6fcc44bc6a4a1e976c1e60b31d0" > < div class = "ttname" > < a href = "classoperations__research_1_1_simple_max_flow.html#a3be0f6fcc44bc6a4a1e976c1e60b31d0" > operations_research::SimpleMaxFlow::NumNodes< / a > < / div > < div class = "ttdeci" > NodeIndex NumNodes() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00038" > max_flow.cc:38< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_simple_max_flow_html_a4d39b4f2db0792ccce2a922c74f43ecf" > < div class = "ttname" > < a href = "classoperations__research_1_1_simple_max_flow.html#a4d39b4f2db0792ccce2a922c74f43ecf" > operations_research::SimpleMaxFlow::CreateFlowModelOfLastSolve< / a > < / div > < div class = "ttdeci" > FlowModel CreateFlowModelOfLastSolve()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00119" > max_flow.cc:119< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_simple_max_flow_html_a4ede8a987bfe0972a51942bbca22d4c1" > < div class = "ttname" > < a href = "classoperations__research_1_1_simple_max_flow.html#a4ede8a987bfe0972a51942bbca22d4c1" > operations_research::SimpleMaxFlow::GetSourceSideMinCut< / a > < / div > < div class = "ttdeci" > void GetSourceSideMinCut(std::vector< NodeIndex > *result)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00109" > max_flow.cc:109< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_simple_max_flow_html_a57f5767b51471aa3c021db1cb451726e" > < div class = "ttname" > < a href = "classoperations__research_1_1_simple_max_flow.html#a57f5767b51471aa3c021db1cb451726e" > operations_research::SimpleMaxFlow::Solve< / a > < / div > < div class = "ttdeci" > Status Solve(NodeIndex source, NodeIndex sink)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00054" > max_flow.cc:54< / a > < / div > < / div >
2020-10-09 12:00:09 +02:00
< div class = "ttc" id = "aclassoperations__research_1_1_simple_max_flow_html_a67a0db04d321a74b7e7fcfd3f1a3f70b" > < div class = "ttname" > < a href = "classoperations__research_1_1_simple_max_flow.html#a67a0db04d321a74b7e7fcfd3f1a3f70b" > operations_research::SimpleMaxFlow::Status< / a > < / div > < div class = "ttdeci" > Status< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8h_source.html#l00180" > max_flow.h:180< / a > < / div > < / div >
2021-01-26 11:28:50 +01:00
< div class = "ttc" id = "aclassoperations__research_1_1_simple_max_flow_html_a67a0db04d321a74b7e7fcfd3f1a3f70ba2579881e7c83261bc21bafb5a5c92cad" > < div class = "ttname" > < a href = "classoperations__research_1_1_simple_max_flow.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba2579881e7c83261bc21bafb5a5c92cad" > operations_research::SimpleMaxFlow::OPTIMAL< / a > < / div > < div class = "ttdeci" > @ OPTIMAL< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8h_source.html#l00183" > max_flow.h:183< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_simple_max_flow_html_a67a0db04d321a74b7e7fcfd3f1a3f70ba63e6c2750d99f3c548e6a08bb6822fe2" > < div class = "ttname" > < a href = "classoperations__research_1_1_simple_max_flow.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba63e6c2750d99f3c548e6a08bb6822fe2" > operations_research::SimpleMaxFlow::POSSIBLE_OVERFLOW< / a > < / div > < div class = "ttdeci" > @ POSSIBLE_OVERFLOW< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8h_source.html#l00190" > max_flow.h:190< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_simple_max_flow_html_a67a0db04d321a74b7e7fcfd3f1a3f70bac2811be86dd03c6735e3b0db51ad914f" > < div class = "ttname" > < a href = "classoperations__research_1_1_simple_max_flow.html#a67a0db04d321a74b7e7fcfd3f1a3f70bac2811be86dd03c6735e3b0db51ad914f" > operations_research::SimpleMaxFlow::BAD_INPUT< / a > < / div > < div class = "ttdeci" > @ BAD_INPUT< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8h_source.html#l00192" > max_flow.h:192< / a > < / div > < / div >
2020-10-09 12:00:09 +02:00
< div class = "ttc" id = "aclassoperations__research_1_1_simple_max_flow_html_a67a0db04d321a74b7e7fcfd3f1a3f70bac76ecfd837bdc6d4150bb02c403356e4" > < div class = "ttname" > < a href = "classoperations__research_1_1_simple_max_flow.html#a67a0db04d321a74b7e7fcfd3f1a3f70bac76ecfd837bdc6d4150bb02c403356e4" > operations_research::SimpleMaxFlow::BAD_RESULT< / a > < / div > < div class = "ttdeci" > @ BAD_RESULT< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8h_source.html#l00195" > max_flow.h:194< / a > < / div > < / div >
2021-01-26 11:28:50 +01:00
< div class = "ttc" id = "aclassoperations__research_1_1_simple_max_flow_html_a7898be8b7efbfe53a58fcf621cf41315" > < div class = "ttname" > < a href = "classoperations__research_1_1_simple_max_flow.html#a7898be8b7efbfe53a58fcf621cf41315" > operations_research::SimpleMaxFlow::NumArcs< / a > < / div > < div class = "ttdeci" > ArcIndex NumArcs() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00040" > max_flow.cc:40< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_simple_max_flow_html_a865dfd15177ea8b4cd75a34ab9cee1b1" > < div class = "ttname" > < a href = "classoperations__research_1_1_simple_max_flow.html#a865dfd15177ea8b4cd75a34ab9cee1b1" > operations_research::SimpleMaxFlow::OptimalFlow< / a > < / div > < div class = "ttdeci" > FlowQuantity OptimalFlow() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00105" > max_flow.cc:105< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_simple_max_flow_html_a9d8699dbc3e3b9cadc36d4fd5ee29dce" > < div class = "ttname" > < a href = "classoperations__research_1_1_simple_max_flow.html#a9d8699dbc3e3b9cadc36d4fd5ee29dce" > operations_research::SimpleMaxFlow::AddArcWithCapacity< / a > < / div > < div class = "ttdeci" > ArcIndex AddArcWithCapacity(NodeIndex tail, NodeIndex head, FlowQuantity capacity)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00027" > max_flow.cc:27< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_simple_max_flow_html_a9dcd8610149406a1593d2a0725290482" > < div class = "ttname" > < a href = "classoperations__research_1_1_simple_max_flow.html#a9dcd8610149406a1593d2a0725290482" > operations_research::SimpleMaxFlow::Capacity< / a > < / div > < div class = "ttdeci" > FlowQuantity Capacity(ArcIndex arc) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00046" > max_flow.cc:46< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_simple_max_flow_html_aa5f729a6274027e5e5478e4bd76603ca" > < div class = "ttname" > < a href = "classoperations__research_1_1_simple_max_flow.html#aa5f729a6274027e5e5478e4bd76603ca" > operations_research::SimpleMaxFlow::Head< / a > < / div > < div class = "ttdeci" > NodeIndex Head(ArcIndex arc) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00044" > max_flow.cc:44< / a > < / div > < / div >
2020-10-09 12:00:09 +02:00
< div class = "ttc" id = "aclassoperations__research_1_1_simple_max_flow_html_ab49dbdb731f80e626e575bdf66835f46" > < div class = "ttname" > < a href = "classoperations__research_1_1_simple_max_flow.html#ab49dbdb731f80e626e575bdf66835f46" > operations_research::SimpleMaxFlow::Tail< / a > < / div > < div class = "ttdeci" > NodeIndex Tail(ArcIndex arc) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00042" > max_flow.cc:42< / a > < / div > < / div >
2021-01-26 11:28:50 +01:00
< div class = "ttc" id = "aclassoperations__research_1_1_simple_max_flow_html_ac7bfd46bed70e12f118aa53df0c26769" > < div class = "ttname" > < a href = "classoperations__research_1_1_simple_max_flow.html#ac7bfd46bed70e12f118aa53df0c26769" > operations_research::SimpleMaxFlow::SetArcCapacity< / a > < / div > < div class = "ttdeci" > void SetArcCapacity(ArcIndex arc, FlowQuantity capacity)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00050" > max_flow.cc:50< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_simple_max_flow_html_ad8ca9f0f372e03f5cf3af1e163230792" > < div class = "ttname" > < a href = "classoperations__research_1_1_simple_max_flow.html#ad8ca9f0f372e03f5cf3af1e163230792" > operations_research::SimpleMaxFlow::GetSinkSideMinCut< / a > < / div > < div class = "ttdeci" > void GetSinkSideMinCut(std::vector< NodeIndex > *result)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "max__flow_8cc_source.html#l00114" > max_flow.cc:114< / 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 = "aconstraint__solver_2table_8cc_html_acb18315d548212835cd8ed4287e6c0b6" > < div class = "ttname" > < a href = "constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6" > a< / a > < / div > < div class = "ttdeci" > int64_t a< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "constraint__solver_2table_8cc_source.html#l00046" > constraint_solver/table.cc:46< / a > < / div > < / div >
2021-01-26 11:28:50 +01:00
< div class = "ttc" id = "agraph_8h_html" > < div class = "ttname" > < a href = "graph_8h.html" > graph.h< / a > < / div > < / div >
2020-09-02 09:42:51 +02:00
< 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_a0728f23c9a47655d38e0bf1a2f200bcf" > < div class = "ttname" > < a href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > < / div > < div class = "ttdeci" > GRBmodel * model< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "gurobi__interface_8cc_source.html#l00273" > gurobi_interface.cc:273< / a > < / div > < / div >
< 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 = "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 = "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_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_a7deeae530369e107f9d91c1a189f451f" > < div class = "ttname" > < a href = "namespaceoperations__research.html#a7deeae530369e107f9d91c1a189f451f" > operations_research::Arc< / a > < / div > < div class = "ttdeci" > std::pair< int64_t, int64_t > Arc< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "search_8cc_source.html#l03383" > search.cc:3383< / 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 = "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 = "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_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 = "max__flow_8cc.html" > max_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 >
