alpha.cc

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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: 2008-02-21 05:52:18 +0100 (Thu, 21 Feb 2008) $ by $Author: schulte $
 *     $Revision: 6259 $
 *
 *  This file is part of Gecode, the generic constraint
 *  development environment:
 *     http://www.gecode.org
 *
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#include "examples/support.hh"
#include "gecode/minimodel.hh"

class Alpha : public Example {
protected:
  static const int n = 26;
  IntVarArray      le;
public:
  enum {
    BRANCH_NONE, 
    BRANCH_SIZE  
  };
  Alpha(const Options& opt) : le(this,n,1,n) {
    IntVar
      a(le[ 0]), b(le[ 1]), c(le[ 2]), e(le[ 4]), f(le[ 5]),
      g(le[ 6]), h(le[ 7]), i(le[ 8]), j(le[ 9]), k(le[10]),
      l(le[11]), m(le[12]), n(le[13]), o(le[14]), p(le[15]),
      q(le[16]), r(le[17]), s(le[18]), t(le[19]), u(le[20]),
      v(le[21]), w(le[22]), x(le[23]), y(le[24]), z(le[25]);

    post(this, b+a+l+l+e+t       == 45,  opt.icl());
    post(this, c+e+l+l+o         == 43,  opt.icl());
    post(this, c+o+n+c+e+r+t     == 74,  opt.icl());
    post(this, f+l+u+t+e         == 30,  opt.icl());
    post(this, f+u+g+u+e         == 50,  opt.icl());
    post(this, g+l+e+e           == 66,  opt.icl());
    post(this, j+a+z+z           == 58,  opt.icl());
    post(this, l+y+r+e           == 47,  opt.icl());
    post(this, o+b+o+e           == 53,  opt.icl());
    post(this, o+p+e+r+a         == 65,  opt.icl());
    post(this, p+o+l+k+a         == 59,  opt.icl());
    post(this, q+u+a+r+t+e+t     == 50,  opt.icl());
    post(this, s+a+x+o+p+h+o+n+e == 134, opt.icl());
    post(this, s+c+a+l+e         == 51,  opt.icl());
    post(this, s+o+l+o           == 37,  opt.icl());
    post(this, s+o+n+g           == 61,  opt.icl());
    post(this, s+o+p+r+a+n+o     == 82,  opt.icl());
    post(this, t+h+e+m+e         == 72,  opt.icl());
    post(this, v+i+o+l+i+n       == 100, opt.icl());
    post(this, w+a+l+t+z         == 34,  opt.icl());

    distinct(this, le, opt.icl());

    branch(this, le, 
           (opt.branching() == BRANCH_NONE) ? INT_VAR_NONE : INT_VAR_SIZE_MIN,
           INT_VAL_MIN);
  }

  Alpha(bool share, Alpha& s) : Example(share,s) {
    le.update(this, share, s.le);
  }
  virtual Space*
  copy(bool share) {
    return new Alpha(share,*this);
  }
  virtual void
  print(std::ostream& os) {
    os << "\t";
    for (int i = 0; i < n; i++) {
      os << ((char) (i+'a')) << '=' << le[i] << ((i<n-1)?", ":"\n");
      if ((i+1) % 8 == 0)
        os << std::endl << "\t";
    }
    os << std::endl;
  }
};

int
main(int argc, char* argv[]) {
  Options opt("Alpha");
  opt.solutions(0);
  opt.iterations(10);
  opt.branching(Alpha::BRANCH_NONE);
  opt.branching(Alpha::BRANCH_NONE, "none");
  opt.branching(Alpha::BRANCH_SIZE, "size");
  opt.parse(argc,argv);
  Example::run<Alpha,DFS,Options>(opt);
  return 0;
}

// STATISTICS: example-any