money.cpp
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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
*
* 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;
class Money : public Script {
protected:
static const int nl = 8;
IntVarArray le;
public:
enum {
MODEL_SINGLE,
MODEL_CARRY
};
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;
});
}
virtual void
print(std::ostream& os) const {
os << "\t" << le << std::endl;
}
Money(Money& s) : Script(s) {
le.update(*this, s.le);
}
virtual Space*
copy(void) {
return new Money(*this);
}
};
int
main(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
Gecode::Brancher
Base-class for branchers.
Definition core.hpp:1442
Gecode::Driver::ScriptBase< Driver::IgnoreStepOption< Space > >::run
static void run(const Options &opt, Script *s=NULL)
Gecode::IntVarArray
Integer variable array.
Definition int.hh:763
Gecode::IntVar
Integer variables.
Definition int.hh:371
Gecode::Options
Options for scripts
Definition driver.hh:366
Gecode::Space
Computation spaces.
Definition core.hpp:1742
Money::main
int main(int argc, char *argv[])
Main-function.
Definition money.cpp:129
Money::le
IntVarArray le
Array of letters.
Definition money.cpp:54
Money::nl
static const int nl
Number of letters.
Definition money.cpp:52
Money::copy
virtual Space * copy(void)
Copy during cloning.
Definition money.cpp:120
Money::Money
Money(Money &s)
Constructor for cloning s.
Definition money.cpp:115
Money::MODEL_CARRY
@ MODEL_CARRY
Use carries.
Definition money.cpp:59
Money::MODEL_SINGLE
@ MODEL_SINGLE
Use single linear equation.
Definition money.cpp:58
Money::Money
Money(const Options &opt)
Actual model.
Definition money.cpp:62
Money::print
virtual void print(std::ostream &os) const
Print solution.
Definition money.cpp:110
Test::Options::parse
void parse(int argc, char *argv[])
Parse commandline arguments.
Definition test.cpp:120
driver.hh
int.hh
Gecode::Script
Driver::ScriptBase< Driver::IgnoreStepOption< Space > > Script
Base-class for scripts.
Definition driver.hh:801
Gecode::trace
GECODE_FLOAT_EXPORT void trace(Home home, const FloatVarArgs &x, TraceFilter tf, int te=(TE_INIT|TE_PRUNE|TE_FIX|TE_FAIL|TE_DONE), FloatTracer &t=StdFloatTracer::def)
Create a tracer for float variables.
Definition trace.cpp:39
Gecode::branch
void branch(Home home, const FloatVarArgs &x, FloatVarBranch vars, FloatValBranch vals, FloatBranchFilter bf=nullptr, FloatVarValPrint vvp=nullptr)
Branch over x with variable selection vars and value selection vals.
Definition branch.cpp:39
Gecode::rel
void rel(Home home, FloatVar x0, FloatRelType frt, FloatVar x1)
Post propagator for .
Definition rel.cpp:68
Gecode::IRT_NQ
@ IRT_NQ
Disequality ( ).
Definition int.hh:927
minimodel.hh
Gecode
Gecode toplevel namespace
Gecode::distinct
void distinct(Home home, const IntVarArgs &x, IntPropLevel ipl=IPL_DEF)
Post propagator for for all .
Definition distinct.cpp:46
Gecode::INT_VAL_MIN
IntValBranch INT_VAL_MIN(void)
Select smallest value.
Definition val.hpp:55
Gecode::INT_VAR_SIZE_MIN
IntVarBranch INT_VAR_SIZE_MIN(BranchTbl tbl=nullptr)
Select variable with smallest domain size.
Definition var.hpp:206
GECODE_NEVER
#define GECODE_NEVER
Assert that this command is never executed.
Definition macros.hpp:56