/* -*- C++ -*-

  * src/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;

 }