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/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
* Main authors:
* Christian Schulte <schulte@gecode.org>
*
* Copyright:
* Christian Schulte, 2001
*
* Last modified:
* $Date: 2010-05-08 12:56:03 +0200 (Sat, 08 May 2010) $ by $Author: tack $
* $Revision: 10906 $
*
* 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: DONALD+GERALD=ROBERT puzzle
*
* Well-known cryptoarithmetic puzzle of unknown origin.
*
* \ingroup ExProblem
*
*/
class Donald : public Script {
private:
/// Number of letters
static const int nl = 10;
/// Array of letters
IntVarArray le;
public:
/// Model variants
enum {
MODEL_SINGLE, ///< Use single linear equation
MODEL_CARRY ///< Use carries
};
/// Actual model
Donald(const Options& opt) :
le(*this,nl,0,9) {
IntVar
d(le[0]), o(le[1]), n(le[2]), a(le[3]), l(le[4]),
g(le[5]), e(le[6]), r(le[7]), b(le[8]), t(le[9]);
rel(*this, d, IRT_NQ, 0);
rel(*this, g, IRT_NQ, 0);
rel(*this, r, IRT_NQ, 0);
distinct(*this, le, opt.icl());
switch (opt.model()) {
case MODEL_SINGLE:
rel(*this, 100000*d+10000*o+1000*n+100*a+10*l+d
+ 100000*g+10000*e+1000*r+100*a+10*l+d
== 100000*r+10000*o+1000*b+100*e+10*r+t,
opt.icl());
break;
case MODEL_CARRY:
{
IntVar c0(*this,0,1), c1(*this,0,1), c2(*this,0,1),
c3(*this,0,1), c4(*this,0,1);
rel(*this, d+d == t+10*c0, opt.icl());
rel(*this, c0+l+l == r+10*c1, opt.icl());
rel(*this, c1+a+a == e+10*c2, opt.icl());
rel(*this, c2+n+r == b+10*c3, opt.icl());
rel(*this, c3+o+e == o+10*c4, opt.icl());
rel(*this, c4+d+g == r, opt.icl());
}
break;
default: GECODE_NEVER;
}
branch(*this, le, INT_VAR_SIZE_MIN, INT_VAL_MAX);
}
/// Constructor for cloning \a s
Donald(bool share, Donald& s) : Script(share,s) {
le.update(*this, share, s.le);
}
/// Copy during cloning
virtual Space*
copy(bool share) {
return new Donald(share,*this);
}
/// Print solution
virtual void
print(std::ostream& os) const {
os << "\t" << le << std::endl;;
}
};
/** \brief Main-function
* \relates Donald
*/
int
main(int argc, char* argv[]) {
Options opt("Donald+Gerald=Robert");
opt.model(Donald::MODEL_SINGLE);
opt.model(Donald::MODEL_SINGLE, "single", "use single linear equation");
opt.model(Donald::MODEL_CARRY, "carry", "use carry");
opt.solutions(0);
opt.iterations(1500);
opt.parse(argc,argv);
Script::run<Donald,DFS,Options>(opt);
return 0;
}
// STATISTICS: example-any
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