111 lines
3.6 KiB
C#
111 lines
3.6 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 Eq10
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{
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/**
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*
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* Eq 10 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/eq10.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("Eq10");
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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 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 X7 = solver.MakeIntVar(0, 10, "X7");
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IntVar[] X = { X1, X2, X3, X4, X5, X6, X7 };
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//
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// Constraints
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//
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solver.Add(0 + 98527 * X1 + 34588 * X2 + 5872 * X3 + 59422 * X5 + 65159 * X7 ==
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1547604 + 30704 * X4 + 29649 * X6);
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solver.Add(0 + 98957 * X2 + 83634 * X3 + 69966 * X4 + 62038 * X5 + 37164 * X6 + 85413 * X7 ==
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1823553 + 93989 * X1);
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solver.Add(900032 + 10949 * X1 + 77761 * X2 + 67052 * X5 ==
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0 + 80197 * X3 + 61944 * X4 + 92964 * X6 + 44550 * X7);
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solver.Add(0 + 73947 * X1 + 84391 * X3 + 81310 * X5 ==
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1164380 + 96253 * X2 + 44247 * X4 + 70582 * X6 + 33054 * X7);
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solver.Add(0 + 13057 * X3 + 42253 * X4 + 77527 * X5 + 96552 * X7 ==
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1185471 + 60152 * X1 + 21103 * X2 + 97932 * X6);
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solver.Add(1394152 + 66920 * X1 + 55679 * X4 ==
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0 + 64234 * X2 + 65337 * X3 + 45581 * X5 + 67707 * X6 + 98038 * X7);
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solver.Add(0 + 68550 * X1 + 27886 * X2 + 31716 * X3 + 73597 * X4 + 38835 * X7 ==
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279091 + 88963 * X5 + 76391 * X6);
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solver.Add(0 + 76132 * X2 + 71860 * X3 + 22770 * X4 + 68211 * X5 + 78587 * X6 ==
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480923 + 48224 * X1 + 82817 * X7);
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solver.Add(519878 + 94198 * X2 + 87234 * X3 + 37498 * X4 ==
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0 + 71583 * X1 + 25728 * X5 + 25495 * X6 + 70023 * X7);
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solver.Add(361921 + 78693 * X1 + 38592 * X5 + 38478 * X6 ==
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0 + 94129 * X2 + 43188 * X3 + 82528 * X4 + 69025 * X7);
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//
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// Search
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//
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DecisionBuilder db = solver.MakePhase(X, Solver.INT_VAR_DEFAULT, Solver.INT_VALUE_DEFAULT);
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solver.NewSearch(db);
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while (solver.NextSolution())
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{
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for (int i = 0; i < n; i++)
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{
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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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