125 lines
4.4 KiB
C#
125 lines
4.4 KiB
C#
//
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// Copyright 2012 Hakan Kjellerstrand
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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using System;
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using Google.OrTools.ConstraintSolver;
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public class Eq20
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{
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/**
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*
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* Eq 20 in Google CP Solver.
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*
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* Standard benchmark problem.
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*
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* Also see http://hakank.org/or-tools/eq20.py
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*
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*/
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private static void Solve()
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{
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Solver solver = new Solver("Eq20");
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int n = 7;
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//
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// Decision variables
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//
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IntVar X0 = solver.MakeIntVar(0, 10, "X0");
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IntVar X1 = solver.MakeIntVar(0, 10, "X1");
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IntVar X2 = solver.MakeIntVar(0, 10, "X2");
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IntVar X3 = solver.MakeIntVar(0, 10, "X3");
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IntVar X4 = solver.MakeIntVar(0, 10, "X4");
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IntVar X5 = solver.MakeIntVar(0, 10, "X5");
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IntVar X6 = solver.MakeIntVar(0, 10, "X6");
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IntVar[] X = {X0,X1,X2,X3,X4,X5,X6};
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//
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// Constraints
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//
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solver.Add(-76706*X0 + 98205*X1 + 23445*X2 + 67921*X3 + 24111*X4 +
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-48614*X5 + -41906*X6 == 821228);
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solver.Add(87059*X0 + -29101*X1 + -5513*X2 + -21219*X3 + 22128*X4 +
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7276*X5 + 57308*X6 == 22167);
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solver.Add(-60113*X0 + 29475*X1 + 34421*X2 + -76870*X3 + 62646*X4 +
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29278*X5 + -15212*X6 == 251591);
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solver.Add(49149*X0 + 52871*X1 + -7132*X2 + 56728*X3 + -33576*X4 +
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-49530*X5 + -62089*X6 == 146074);
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solver.Add(-10343*X0 + 87758*X1 + -11782*X2 + 19346*X3 + 70072*X4 +
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-36991*X5 + 44529*X6 == 740061);
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solver.Add(85176*X0 + -95332*X1 + -1268*X2 + 57898*X3 + 15883*X4 +
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50547*X5 + 83287*X6 == 373854);
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solver.Add(-85698*X0 + 29958*X1 + 57308*X2 + 48789*X3 + -78219*X4 +
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4657*X5 + 34539*X6 == 249912);
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solver.Add(-67456*X0 + 84750*X1 + -51553*X2 + 21239*X3 + 81675*X4 +
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-99395*X5 + -4254*X6 == 277271);
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solver.Add(94016*X0 + -82071*X1 + 35961*X2 + 66597*X3 + -30705*X4 +
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-44404*X5 + -38304*X6 == 25334);
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solver.Add(-60301*X0 + 31227*X1 + 93951*X2 + 73889*X3 + 81526*X4 +
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-72702*X5 + 68026*X6 == 1410723);
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solver.Add(-16835*X0 + 47385*X1 + 97715*X2 + -12640*X3 + 69028*X4 +
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76212*X5 + -81102*X6 == 1244857);
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solver.Add(-43277*X0 + 43525*X1 + 92298*X2 + 58630*X3 + 92590*X4 +
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-9372*X5 + -60227*X6 == 1503588);
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solver.Add(-64919*X0 + 80460*X1 + 90840*X2 + -59624*X3 + -75542*X4 +
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25145*X5 + -47935*X6 == 18465);
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solver.Add(-45086*X0 + 51830*X1 + -4578*X2 + 96120*X3 + 21231*X4 +
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97919*X5 + 65651*X6 == 1198280);
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solver.Add(85268*X0 + 54180*X1 + -18810*X2 + -48219*X3 + 6013*X4 +
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78169*X5 + -79785*X6 == 90614);
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solver.Add(8874*X0 + -58412*X1 + 73947*X2 + 17147*X3 + 62335*X4 +
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16005*X5 + 8632*X6 == 752447);
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solver.Add(71202*X0 + -11119*X1 + 73017*X2 + -38875*X3 + -14413*X4 +
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-29234*X5 + 72370*X6 == 129768);
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solver.Add(1671*X0 + -34121*X1 + 10763*X2 + 80609*X3 + 42532*X4 +
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93520*X5 + -33488*X6 == 915683);
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solver.Add(51637*X0 + 67761*X1 + 95951*X2 + 3834*X3 + -96722*X4 +
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59190*X5 + 15280*X6 == 533909);
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solver.Add(-16105*X0 + 62397*X1 + -6704*X2 + 43340*X3 + 95100*X4 +
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-68610*X5 + 58301*X6 == 876370);
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//
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// Search
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//
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DecisionBuilder db = solver.MakePhase(X,
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Solver.INT_VAR_DEFAULT,
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Solver.INT_VALUE_DEFAULT);
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solver.NewSearch(db);
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while (solver.NextSolution()) {
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for(int i = 0; i < n; i++) {
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Console.Write(X[i].ToString() + " ");
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}
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Console.WriteLine();
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}
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Console.WriteLine("\nSolutions: " + solver.Solutions());
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Console.WriteLine("WallTime: " + solver.WallTime() + "ms ");
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Console.WriteLine("Failures: " + solver.Failures());
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Console.WriteLine("Branches: " + solver.Branches());
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solver.EndSearch();
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}
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public static void Main(String[] args)
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{
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Solve();
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}
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}
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