1 | // -*- c++ -*- |
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2 | #include <iostream> |
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3 | #include <fstream> |
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4 | #include <vector> |
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5 | #include <cstdlib> |
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6 | |
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7 | #include <LEDA/graph.h> |
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8 | #include <LEDA/mc_matching.h> |
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9 | #include <LEDA/list.h> |
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10 | #include <LEDA/graph_gen.h> |
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11 | |
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12 | #include <leda_graph_wrapper.h> |
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13 | #include <list_graph.h> |
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14 | #include <dimacs.h> |
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15 | #include <time_measure.h> |
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16 | #include <for_each_macros.h> |
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17 | #include <graph_wrapper.h> |
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18 | #include <bipartite_graph_wrapper.h> |
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19 | #include <maps.h> |
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20 | #include <max_matching.h> |
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21 | |
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22 | // /** |
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23 | // * Inicializalja a veletlenszamgeneratort. |
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24 | // * Figyelem, ez nem jo igazi random szamokhoz, |
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25 | // * erre ne bizzad a titkaidat! |
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26 | // */ |
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27 | // void random_init() |
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28 | // { |
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29 | // unsigned int seed = getpid(); |
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30 | // seed |= seed << 15; |
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31 | // seed ^= time(0); |
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32 | |
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33 | // srand(seed); |
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34 | // } |
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35 | |
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36 | // /** |
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37 | // * Egy veletlen int-et ad vissza 0 es m-1 kozott. |
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38 | // */ |
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39 | // int random(int m) |
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40 | // { |
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41 | // return int( double(m) * rand() / (RAND_MAX + 1.0) ); |
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42 | // } |
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43 | |
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44 | using namespace lemon; |
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45 | |
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46 | int main() { |
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47 | |
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48 | //for leda graph |
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49 | leda::graph lg; |
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50 | //lg.make_undirected(); |
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51 | typedef LedaGraphWrapper<leda::graph> Graph; |
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52 | Graph g(lg); |
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53 | |
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54 | //for UndirListGraph |
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55 | //typedef UndirListGraph Graph; |
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56 | //Graph g; |
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57 | |
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58 | typedef Graph::Node Node; |
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59 | typedef Graph::NodeIt NodeIt; |
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60 | typedef Graph::Edge Edge; |
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61 | typedef Graph::EdgeIt EdgeIt; |
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62 | typedef Graph::OutEdgeIt OutEdgeIt; |
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63 | |
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64 | std::vector<Graph::Node> s_nodes; |
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65 | std::vector<Graph::Node> t_nodes; |
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66 | |
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67 | int n; |
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68 | std::cout << "Number of nodes="; |
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69 | std::cin >> n; |
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70 | int m; |
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71 | std::cout << "number of edges="; |
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72 | std::cin >> m; |
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73 | std::cout << std::endl; |
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74 | |
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75 | random_graph(lg, n, m); |
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76 | |
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77 | Timer ts; |
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78 | |
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79 | // writeDimacs(std::cout, g); //for check |
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80 | |
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81 | MaxMatching<Graph> max_matching(g); |
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82 | std::cout << |
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83 | "Running the edmonds algorithm run()... " |
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84 | <<std::endl; |
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85 | ts.reset(); |
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86 | max_matching.run(); |
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87 | std::cout<<"Elapsed time: "<<ts<<std::endl; |
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88 | int s=0; |
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89 | Graph::NodeMap<Node> mate(g,INVALID); |
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90 | max_matching.writeNMapNode(mate); |
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91 | NodeIt v; |
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92 | for(g.first(v); g.valid(v); g.next(v) ) { |
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93 | if ( g.valid(mate[v]) ) { |
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94 | ++s; |
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95 | } |
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96 | } |
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97 | int size=(int)s/2; //size will be used as the size of a maxmatching |
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98 | std::cout << size << " is the size of the matching found by run(),"<<std::endl; |
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99 | if ( size == max_matching.size() ) { |
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100 | std::cout<< "which equals to the size of the actual matching reported by size().\n"<< std::endl; |
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101 | } else { |
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102 | std::cout<< "which does not equal to the size of the actual matching reported by size()!\n"<< std::endl; |
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103 | } |
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104 | |
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105 | |
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106 | |
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107 | |
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108 | ts.reset(); |
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109 | leda_list<leda_edge> ml=MAX_CARD_MATCHING(lg); |
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110 | std::cout << "LEDA max matching algorithm." << std::endl |
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111 | << "Size of matching: " |
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112 | << ml.size() << std::endl; |
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113 | std::cout << "elapsed time: " << ts << std::endl; |
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114 | std::cout << "\n"; |
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115 | |
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116 | return 0; |
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117 | } |
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