Jip J. Dekker
981be2067e
git-subtree-dir: software/gecode_on_replay git-subtree-split: 8051d92b9c89e49cccfbd1c201371580d7703ab4
124 lines
4.0 KiB
C++
Executable File
124 lines
4.0 KiB
C++
Executable File
/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
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/*
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* Main authors:
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* Christian Schulte <schulte@gecode.org>
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*
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* Copyright:
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* Christian Schulte, 2001
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*
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* This file is part of Gecode, the generic constraint
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* development environment:
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* http://www.gecode.org
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#include <gecode/driver.hh>
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#include <gecode/int.hh>
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using namespace Gecode;
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/**
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* \brief %Example: Solving 20 linear equations
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*
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* Standard benchmark for solving linear equations.
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*
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* \ingroup Example
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*
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*/
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class Eq20 : public Script {
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private:
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/// Number of variables
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static const int x_n = 7;
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/// Number of equations
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static const int e_n = 20;
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/// Variables
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IntVarArray x;
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public:
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/// The actual problem
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Eq20(const Options& opt)
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: Script(opt), x(*this,x_n,0,10) {
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// Coefficients and constants for the equations
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int eqs[e_n][x_n+1] = {
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{876370, -16105, 62397, -6704, 43340, 95100, -68610, 58301},
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{533909, 51637, 67761, 95951, 3834, -96722, 59190, 15280},
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{915683, 1671, -34121, 10763, 80609, 42532, 93520, -33488},
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{129768, 71202, -11119, 73017, -38875, -14413, -29234, 72370},
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{752447, 8874, -58412, 73947, 17147, 62335, 16005, 8632},
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{90614, 85268, 54180, -18810, -48219, 6013, 78169, -79785},
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{1198280, -45086, 51830, -4578, 96120, 21231, 97919, 65651},
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{18465, -64919, 80460, 90840, -59624, -75542, 25145, -47935},
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{1503588, -43277, 43525, 92298, 58630, 92590, -9372, -60227},
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{1244857, -16835, 47385, 97715, -12640, 69028, 76212, -81102},
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{1410723, -60301, 31227, 93951, 73889, 81526, -72702, 68026},
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{25334, 94016, -82071, 35961, 66597, -30705, -44404, -38304},
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{277271, -67456, 84750, -51553, 21239, 81675, -99395, -4254},
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{249912, -85698, 29958, 57308, 48789, -78219, 4657, 34539},
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{373854, 85176, -95332, -1268, 57898, 15883, 50547, 83287},
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{740061, -10343, 87758, -11782, 19346, 70072, -36991, 44529},
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{146074, 49149, 52871, -7132, 56728, -33576, -49530, -62089},
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{251591, -60113, 29475, 34421, -76870, 62646, 29278, -15212},
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{22167, 87059, -29101, -5513, -21219, 22128, 7276, 57308},
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{821228, -76706, 98205, 23445, 67921, 24111, -48614, -41906}
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};
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// Post equation constraints
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for (int i = e_n; i--; ) {
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IntArgs c(x_n, &eqs[i][1]);
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linear(*this, c, x, IRT_EQ, eqs[i][0], opt.ipl());
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}
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branch(*this, x, INT_VAR_NONE(), INT_VAL_MIN());
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}
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/// Constructor for cloning \a s
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Eq20(Eq20& s) : Script(s) {
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x.update(*this, s.x);
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}
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/// Perform copying during cloning
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virtual Space*
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copy(void) {
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return new Eq20(*this);
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}
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/// Print solution
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virtual void
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print(std::ostream& os) const {
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os << "\tx[] = " << x << std::endl;
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}
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};
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/** \brief Main-function
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* \relates Eq20
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*/
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int
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main(int argc, char* argv[]) {
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Options opt("Eq20");
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opt.solutions(0);
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opt.iterations(1000);
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opt.parse(argc,argv);
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Script::run<Eq20,DFS,Options>(opt);
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return 0;
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}
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// STATISTICS: example-any
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