Files
2020-11-03 10:15:53 +01:00

111 lines
3.6 KiB
C#

//
// Copyright 2012 Hakan Kjellerstrand
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
using System;
using Google.OrTools.ConstraintSolver;
public class Eq10
{
/**
*
* Eq 10 in Google CP Solver.
*
* Standard benchmark problem.
*
* Also see http://hakank.org/or-tools/eq10.py
*
*/
private static void Solve()
{
Solver solver = new Solver("Eq10");
int n = 7;
//
// Decision variables
//
IntVar X1 = solver.MakeIntVar(0, 10, "X1");
IntVar X2 = solver.MakeIntVar(0, 10, "X2");
IntVar X3 = solver.MakeIntVar(0, 10, "X3");
IntVar X4 = solver.MakeIntVar(0, 10, "X4");
IntVar X5 = solver.MakeIntVar(0, 10, "X5");
IntVar X6 = solver.MakeIntVar(0, 10, "X6");
IntVar X7 = solver.MakeIntVar(0, 10, "X7");
IntVar[] X = { X1, X2, X3, X4, X5, X6, X7 };
//
// Constraints
//
solver.Add(0 + 98527 * X1 + 34588 * X2 + 5872 * X3 + 59422 * X5 + 65159 * X7 ==
1547604 + 30704 * X4 + 29649 * X6);
solver.Add(0 + 98957 * X2 + 83634 * X3 + 69966 * X4 + 62038 * X5 + 37164 * X6 + 85413 * X7 ==
1823553 + 93989 * X1);
solver.Add(900032 + 10949 * X1 + 77761 * X2 + 67052 * X5 ==
0 + 80197 * X3 + 61944 * X4 + 92964 * X6 + 44550 * X7);
solver.Add(0 + 73947 * X1 + 84391 * X3 + 81310 * X5 ==
1164380 + 96253 * X2 + 44247 * X4 + 70582 * X6 + 33054 * X7);
solver.Add(0 + 13057 * X3 + 42253 * X4 + 77527 * X5 + 96552 * X7 ==
1185471 + 60152 * X1 + 21103 * X2 + 97932 * X6);
solver.Add(1394152 + 66920 * X1 + 55679 * X4 ==
0 + 64234 * X2 + 65337 * X3 + 45581 * X5 + 67707 * X6 + 98038 * X7);
solver.Add(0 + 68550 * X1 + 27886 * X2 + 31716 * X3 + 73597 * X4 + 38835 * X7 ==
279091 + 88963 * X5 + 76391 * X6);
solver.Add(0 + 76132 * X2 + 71860 * X3 + 22770 * X4 + 68211 * X5 + 78587 * X6 ==
480923 + 48224 * X1 + 82817 * X7);
solver.Add(519878 + 94198 * X2 + 87234 * X3 + 37498 * X4 ==
0 + 71583 * X1 + 25728 * X5 + 25495 * X6 + 70023 * X7);
solver.Add(361921 + 78693 * X1 + 38592 * X5 + 38478 * X6 ==
0 + 94129 * X2 + 43188 * X3 + 82528 * X4 + 69025 * X7);
//
// Search
//
DecisionBuilder db = solver.MakePhase(X, Solver.INT_VAR_DEFAULT, Solver.INT_VALUE_DEFAULT);
solver.NewSearch(db);
while (solver.NextSolution())
{
for (int i = 0; i < n; i++)
{
Console.Write(X[i].ToString() + " ");
}
Console.WriteLine();
}
Console.WriteLine("\nSolutions: " + solver.Solutions());
Console.WriteLine("WallTime: " + solver.WallTime() + "ms ");
Console.WriteLine("Failures: " + solver.Failures());
Console.WriteLine("Branches: " + solver.Branches());
solver.EndSearch();
}
public static void Main(String[] args)
{
Solve();
}
}