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all-interval.cpp
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00001 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
00002 /*
00003  *  Main authors:
00004  *     Christian Schulte <schulte@gecode.org>
00005  *
00006  *  Copyright:
00007  *     Christian Schulte, 2006
00008  *
00009  *  Last modified:
00010  *     $Date: 2013-07-08 14:22:40 +0200 (Mon, 08 Jul 2013) $ by $Author: schulte $
00011  *     $Revision: 13820 $
00012  *
00013  *  This file is part of Gecode, the generic constraint
00014  *  development environment:
00015  *     http://www.gecode.org
00016  *
00017  *  Permission is hereby granted, free of charge, to any person obtaining
00018  *  a copy of this software and associated documentation files (the
00019  *  "Software"), to deal in the Software without restriction, including
00020  *  without limitation the rights to use, copy, modify, merge, publish,
00021  *  distribute, sublicense, and/or sell copies of the Software, and to
00022  *  permit persons to whom the Software is furnished to do so, subject to
00023  *  the following conditions:
00024  *
00025  *  The above copyright notice and this permission notice shall be
00026  *  included in all copies or substantial portions of the Software.
00027  *
00028  *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
00029  *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
00030  *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00031  *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
00032  *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
00033  *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
00034  *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00035  *
00036  */
00037 
00038 #include <gecode/driver.hh>
00039 #include <gecode/int.hh>
00040 #include <gecode/minimodel.hh>
00041 
00042 #include <cstdlib>
00043 
00044 using namespace Gecode;
00045 
00066 class AllInterval : public Script {
00067 private:
00069   IntVarArray x;
00071   IntVarArray d;
00072 public:
00074   AllInterval(const SizeOptions& opt) :
00075     x(*this, opt.size(), 0, opt.size()-1),
00076     d(*this, opt.size()-1, 1, opt.size()-1) {
00077     const int n = x.size();
00078 
00079     // Set up variables for distance
00080     for (int i=0; i<n-1; i++)
00081       rel(*this, d[i] == abs(x[i+1]-x[i]), opt.icl());
00082 
00083     distinct(*this, x, opt.icl());
00084     distinct(*this, d, opt.icl());
00085 
00086     // Break mirror symmetry
00087     rel(*this, x[0], IRT_LE, x[1]);
00088     // Break symmetry of dual solution
00089     rel(*this, d[0], IRT_GR, d[n-2]);
00090 
00091     branch(*this, x, INT_VAR_SIZE_MIN(), INT_VAL_SPLIT_MIN());
00092   }
00094   AllInterval(bool share, AllInterval& s)
00095     : Script(share, s) {
00096     x.update(*this, share, s.x);
00097     d.update(*this, share, s.d);
00098   }
00100   virtual Space*
00101   copy(bool share) {
00102     return new AllInterval(share, *this);
00103   }
00105   virtual void
00106   print(std::ostream& os) const {
00107     const int n = x.size();
00108     os << "\tx[" << n << "] = {";
00109     for (int i = 0; i < n-1; i++)
00110       os << x[i] << "(" << d[i] << "),";
00111     os << x[n-1] << "}" << std::endl;
00112   }
00113 };
00114 
00115 
00119 int
00120 main(int argc, char* argv[]){
00121   SizeOptions opt("AllInterval");
00122   opt.size(1000);
00123   opt.iterations(5);
00124   opt.icl(ICL_BND);
00125   opt.parse(argc, argv);
00126   if (opt.size() < 2) {
00127     std::cerr << "size must be at least 2!" << std::endl;
00128     return -1;
00129   }
00130   Script::run<AllInterval,DFS,SizeOptions>(opt);
00131   return 0;
00132 }
00133 
00134 // STATISTICS: example-any
00135