/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
 *  Main authors:
 *     Christian Schulte <schulte@gecode.org>
 *
 *  Copyright:
 *     Christian Schulte, 2006
 *
 *  Last modified:
 *     $Date: 2007-11-30 13:58:34 +0100 (Fri, 30 Nov 2007) $ by $Author: tack $
 *     $Revision: 5524 $
 *
 *  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,
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 *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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 */

#include "examples/support.hh"

/**
 * \brief %Example: Stress test for element constraint (involving integers)
 *
 * This stress test is an adaption of the benchmark for element posted
 * by Neng-Fa Zhou for B-Prolog, November, 2005.
 *
 * \ingroup ExStress
 *
 */
class StressElement : public Example {
protected:
  /// Number of elements in array
  static const int n = 15;
  /// Largest number
  static const int m = 90;
  /// Array arguments
  static const int p[n];

  /// Variables
  IntVarArray x;
public:
  /// The actual problem
  StressElement(const Options&)
    : x(this,n,0,n-1) {

    IntVarArgs s(n);
    for (int i=0; i<n; i++)
      s[i].init(this,0,m);

    rel(this, s, IRT_LQ);

    IntArgs e(n,p);

    for (int i=0; i<n; i++)
      element(this, e, x[i], s[i]);

    distinct(this, x);
    branch(this, x, INT_VAR_SIZE_MIN, INT_VAL_MIN);
  }

  /// Constructor for cloning \a s
  StressElement(bool share, StressElement& s) : Example(share,s) {
    x.update(this, share, s.x);
  }

  /// Perform copying during cloning
  virtual Space*
  copy(bool share) {
    return new StressElement(share,*this);
  }

  /// Print solution
  virtual void
  print(std::ostream& os) {
    os << "\tx[" << n << "] = " << x << std::endl;
  }
};

const int StressElement::p[15] = {16,35,90,42,88,6,40,42,64,48,46,5,90,29,70};

/** \brief Main-function
 *  \relates StressElement
 */
int
main(int argc, char* argv[]) {
  Options opt("StressElement");
  opt.parse(argc,argv);
  Example::run<StressElement,DFS,Options>(opt);
  return 0;
}

// STATISTICS: example-any