/* -*- C++ -*-

 * test/min_cost_flow_test.cc - Part of LEMON, a generic C++ optimization library

 *

 * Copyright (C) 2005 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport

 * (Egervary Research Group on Combinatorial Optimization, EGRES).

 *

 * Permission to use, modify and distribute this software is granted

 * provided that this copyright notice appears in all copies. For

 * precise terms see the accompanying LICENSE file.

 *

 * This software is provided "AS IS" with no warranty of any kind,

 * express or implied, and with no claim as to its suitability for any

 * purpose.

 *

 */

#include <iostream>

#include "test_tools.h"

#include <lemon/list_graph.h>

#include <lemon/min_cost_flow.h>

//#include <path.h>

//#include <maps.h>

using namespace lemon;

bool passed = true;

/*

void check(bool rc, char *msg="") {

  passed = passed && rc;

  if(!rc) {

    std::cerr << "Test failed! ("<< msg << ")" << std::endl; \

  }

}

*/

int main()

{

  typedef ListGraph Graph;

  typedef Graph::Node Node;

  typedef Graph::Edge Edge;

  Graph graph;

  //Ahuja könyv példája

  Node s=graph.addNode();

  Node v1=graph.addNode();  

  Node v2=graph.addNode();

  Node v3=graph.addNode();

  Node v4=graph.addNode();

  Node v5=graph.addNode();

  Node t=graph.addNode();

  Edge s_v1=graph.addEdge(s, v1);

  Edge v1_v2=graph.addEdge(v1, v2);

  Edge s_v3=graph.addEdge(s, v3);

  Edge v2_v4=graph.addEdge(v2, v4);

  Edge v2_v5=graph.addEdge(v2, v5);

  Edge v3_v5=graph.addEdge(v3, v5);

  Edge v4_t=graph.addEdge(v4, t);

  Edge v5_t=graph.addEdge(v5, t);

  Graph::EdgeMap<int> length(graph);

  length.set(s_v1, 6);

  length.set(v1_v2, 4);

  length.set(s_v3, 10);

  length.set(v2_v4, 5);

  length.set(v2_v5, 1);

  length.set(v3_v5, 4);

  length.set(v4_t, 8);

  length.set(v5_t, 8);

  Graph::EdgeMap<int> capacity(graph);

  capacity.set(s_v1, 2);

  capacity.set(v1_v2, 2);

  capacity.set(s_v3, 1);

  capacity.set(v2_v4, 1);

  capacity.set(v2_v5, 1);

  capacity.set(v3_v5, 1);

  capacity.set(v4_t, 1);

  capacity.set(v5_t, 2);

  //  ConstMap<Edge, int> const1map(1);

  std::cout << "Mincostflows algorithm test..." << std::endl;

  MinCostFlow< Graph, Graph::EdgeMap<int>, Graph::EdgeMap<int> >

    surb_test(graph, length, capacity, s, t);

  int k=1;

  surb_test.augment();

  check(  surb_test.flowValue() == 1 && surb_test.totalLength() == 19,"One path, total length should be 19");

  check(  surb_test.run(k) == 1 && surb_test.totalLength() == 19,"One path, total length should be 19");

  check(surb_test.checkComplementarySlackness(), "Is the primal-dual solution pair really optimal?");

  k=2;

  check(  surb_test.run(k) == 2 && surb_test.totalLength() == 41,"Two paths, total length should be 41");

  check(surb_test.checkComplementarySlackness(), "Is the primal-dual solution pair really optimal?");

  surb_test.augment();

  surb_test.augment();

  surb_test.augment();

  k=4;

  check(  surb_test.run(k) == 3 && surb_test.totalLength() == 64,"Three paths, total length should be 64");

  check(surb_test.checkComplementarySlackness(), "Is the primal-dual solution pair really optimal?");

  std::cout << (passed ? "All tests passed." : "Some of the tests failed!!!")

	    << std::endl;

  return passed ? 0 : 1;

}