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/**
 * Copyright (c) 2015, Ecole des Mines de Nantes
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    This product includes software developed by the .
 * 4. Neither the name of the  nor the
 *    names of its contributors may be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY  ''AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL  BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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package org.chocosolver.samples.integer; /**
 *  Copyright (c) 1999-2014, Ecole des Mines de Nantes
 *  All rights reserved.
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are met:
 *
 *      * Redistributions of source code must retain the above copyright
 *        notice, this list of conditions and the following disclaimer.
 *      * Redistributions in binary form must reproduce the above copyright
 *        notice, this list of conditions and the following disclaimer in the
 *        documentation and/or other materials provided with the distribution.
 *      * Neither the name of the Ecole des Mines de Nantes nor the
 *        names of its contributors may be used to endorse or promote products
 *        derived from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
 *  EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 *  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 *  DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
 *  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 *  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 *  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 *  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

import org.chocosolver.samples.AbstractProblem;
import org.chocosolver.solver.Solver;
import org.chocosolver.solver.constraints.IntConstraintFactory;
import org.chocosolver.solver.variables.IntVar;
import org.chocosolver.solver.variables.VariableFactory;


/**
 * The famous SEND + MORE = MONEY problem.
* The Send More Money Problem consists in finding distinct digits for the letters D, E, M, N, O, R, S, Y * such that S and M are different from zero (no leading zeros) and the equation SEND + MORE = MONEY is satisfied. * */ public class SendMoreMoney extends AbstractProblem { IntVar S, E, N, D, M, O, R, Y; IntVar[] ALL; @Override public void createSolver() { solver = new Solver("SendMoreMoney"); } @Override public void buildModel() { S = VariableFactory.enumerated("S", 0, 9, solver); E = VariableFactory.enumerated("E", 0, 9, solver); N = VariableFactory.enumerated("N", 0, 9, solver); D = VariableFactory.enumerated("D", 0, 9, solver); M = VariableFactory.enumerated("M", 0, 9, solver); O = VariableFactory.enumerated("0", 0, 9, solver); R = VariableFactory.enumerated("R", 0, 9, solver); Y = VariableFactory.enumerated("Y", 0, 9, solver); solver.post(IntConstraintFactory.arithm(S, "!=", 0)); solver.post(IntConstraintFactory.arithm(M, "!=", 0)); solver.post(IntConstraintFactory.alldifferent(new IntVar[]{S, E, N, D, M, O, R, Y}, "BC")); ALL = new IntVar[]{ S, E, N, D, M, O, R, E, M, O, N, E, Y}; int[] COEFFS = new int[]{ 1000, 100, 10, 1, 1000, 100, 10, 1, -10000, -1000, -100, -10, -1 }; solver.post(IntConstraintFactory.scalar(ALL, COEFFS, VariableFactory.fixed(0, solver))); } @Override public void configureSearch() { } @Override public void solve() { solver.findSolution(); } @Override public void prettyOut() { System.out.println("SEND + MORE = MONEY "); StringBuilder st = new StringBuilder(); st.append("\t"); for (int i = 0; i < ALL.length; i++) { st.append(String.format("%s : %d\n\t", ALL[i].getName(), ALL[i].getValue())); } System.out.println(st.toString()); } public static void main(String[] args) { new SendMoreMoney().execute(args); } }




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