Something went wrong. Try again.
This repository has no description
Something went wrong. Try again.
4.1 kB · 142 lines
C++
at develop
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- *//* * Main authors: * Christian Schulte <schulte@gecode.org> * * Copyright: * Christian Schulte, 2001 * * This file is part of Gecode, the generic constraint * development environment: * http://www.gecode.org * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * */
#include <gecode/driver.hh>#include <gecode/int.hh>#include <gecode/minimodel.hh>
using namespace Gecode;
/** * \brief %Example: SEND+MORE=MONEY puzzle * * Well-known cryptoarithmetic puzzle. * Henry Dudeney, Strand Magazine, July 1924. * * \ingroup Example * */class Money : public Script {protected: /// Number of letters static const int nl = 8; /// Array of letters IntVarArray le;public: /// Model variants enum { MODEL_SINGLE, ///< Use single linear equation MODEL_CARRY ///< Use carries }; /// Actual model Money(const Options& opt) : Script(opt), le(*this,nl,0,9) { IntVar s(le[0]), e(le[1]), n(le[2]), d(le[3]), m(le[4]), o(le[5]), r(le[6]), y(le[7]);
if (opt.trace()) { trace(*this, le, opt.trace()); trace(*this, opt.trace()); }
rel(*this, s, IRT_NQ, 0); rel(*this, m, IRT_NQ, 0);
distinct(*this, le, opt.ipl());
switch (opt.model()) { case MODEL_SINGLE: rel(*this, 1000*s+100*e+10*n+d + 1000*m+100*o+10*r+e == 10000*m+1000*o+100*n+10*e+y, opt.ipl()); break; case MODEL_CARRY: { IntVar c0(*this,0,1), c1(*this,0,1), c2(*this,0,1), c3(*this,0,1); rel(*this, d+e == y+10*c0, opt.ipl()); rel(*this, c0+n+r == e+10*c1, opt.ipl()); rel(*this, c1+e+o == n+10*c2, opt.ipl()); rel(*this, c2+s+m == o+10*c3, opt.ipl()); rel(*this, c3 == m, opt.ipl()); } break; default: GECODE_NEVER; }
branch(*this, le, INT_VAR_SIZE_MIN(), INT_VAL_MIN(), nullptr, [](const Space&, const Brancher&, unsigned int a, IntVar, int i, const int& n, std::ostream& o) { static char name[8] = {'s','e','n','d', 'm','o','r','y'}; o << name[i] << ((a == 0) ? " = " : " != ") << n; }); } /// Print solution virtual void print(std::ostream& os) const { os << "\t" << le << std::endl; }
/// Constructor for cloning \a s Money(Money& s) : Script(s) { le.update(*this, s.le); } /// Copy during cloning virtual Space* copy(void) { return new Money(*this); }};
/** \brief Main-function * \relates Money */intmain(int argc, char* argv[]) { Options opt("SEND+MORE=MONEY"); opt.model(Money::MODEL_SINGLE); opt.model(Money::MODEL_SINGLE, "single", "use single linear equation"); opt.model(Money::MODEL_CARRY, "carry", "use carry"); opt.solutions(0); opt.iterations(20000); opt.parse(argc,argv); Script::run<Money,DFS,Options>(opt); return 0;}
// STATISTICS: example-any