marci@411: // -*- c++ -*- marci@411: #include <iostream> marci@411: #include <fstream> marci@411: #include <vector> marci@411: #include <cstdlib> marci@411: marci@411: #include <LEDA/graph.h> marci@411: #include <LEDA/mcb_matching.h> marci@411: #include <LEDA/list.h> marci@446: #include <LEDA/graph_gen.h> marci@411: marci@411: #include <leda_graph_wrapper.h> marci@648: #include <sage_graph.h> marci@411: //#include <smart_graph.h> marci@411: //#include <dimacs.h> alpar@921: #include <lemon/time_measure.h> marci@769: #include <for_each_macros.h> alpar@921: #include <lemon/graph_wrapper.h> marci@496: #include <bipartite_graph_wrapper.h> alpar@921: #include <lemon/maps.h> alpar@921: #include <lemon/max_flow.h> marci@411: marci@411: /** marci@411: * Inicializalja a veletlenszamgeneratort. marci@411: * Figyelem, ez nem jo igazi random szamokhoz, marci@411: * erre ne bizzad a titkaidat! marci@411: */ marci@411: void random_init() marci@411: { marci@411: unsigned int seed = getpid(); marci@411: seed |= seed << 15; marci@411: seed ^= time(0); marci@411: marci@411: srand(seed); marci@411: } marci@411: marci@411: /** marci@411: * Egy veletlen int-et ad vissza 0 es m-1 kozott. marci@411: */ marci@411: int random(int m) marci@411: { marci@411: return int( double(m) * rand() / (RAND_MAX + 1.0) ); marci@411: } marci@411: alpar@921: using namespace lemon; marci@411: marci@411: int main() { marci@411: //for leda graph marci@411: leda::graph lg; marci@413: //lg.make_undirected(); marci@411: typedef LedaGraphWrapper<leda::graph> Graph; marci@411: Graph g(lg); marci@411: marci@648: //for UndirSageGraph marci@648: //typedef UndirSageGraph Graph; marci@411: //Graph g; marci@411: marci@411: typedef Graph::Node Node; marci@411: typedef Graph::NodeIt NodeIt; marci@411: typedef Graph::Edge Edge; marci@411: typedef Graph::EdgeIt EdgeIt; marci@411: typedef Graph::OutEdgeIt OutEdgeIt; marci@411: marci@411: std::vector<Graph::Node> s_nodes; marci@411: std::vector<Graph::Node> t_nodes; marci@411: marci@411: int a; marci@411: std::cout << "number of nodes in the first color class="; marci@411: std::cin >> a; marci@411: int b; marci@411: std::cout << "number of nodes in the second color class="; marci@411: std::cin >> b; marci@411: int m; marci@411: std::cout << "number of edges="; marci@411: std::cin >> m; marci@411: marci@411: marci@411: for (int i=0; i<a; ++i) s_nodes.push_back(g.addNode()); marci@411: for (int i=0; i<b; ++i) t_nodes.push_back(g.addNode()); marci@411: marci@411: random_init(); marci@411: for(int i=0; i<m; ++i) { marci@411: g.addEdge(s_nodes[random(a)], t_nodes[random(b)]); marci@411: } marci@411: marci@411: Graph::NodeMap<int> ref_map(g, -1); marci@411: marci@411: IterableBoolMap< Graph::NodeMap<int> > bipartite_map(ref_map); marci@411: for (int i=0; i<a; ++i) bipartite_map.insert(s_nodes[i], false); marci@411: for (int i=0; i<b; ++i) bipartite_map.insert(t_nodes[i], true); marci@411: marci@411: typedef BipartiteGraphWrapper<Graph> BGW; marci@411: BGW bgw(g, bipartite_map); marci@411: marci@411: BGW::NodeMap<int> dbyj(bgw); marci@411: BGW::EdgeMap<int> dbyxcj(bgw); marci@411: marci@769: typedef stBipartiteGraphWrapper<BGW> stGW; marci@411: stGW stgw(bgw); marci@411: ConstMap<stGW::Edge, int> const1map(1); marci@411: marci@411: Timer ts; marci@482: stGW::EdgeMap<int> flow(stgw); marci@482: MaxFlow<stGW, int, ConstMap<stGW::Edge, int>, stGW::EdgeMap<int> > marci@482: max_flow_test(stgw, stgw.S_NODE, stgw.T_NODE, const1map, flow); marci@482: marci@411: ts.reset(); marci@482: FOR_EACH_LOC(stGW::EdgeIt, e, stgw) flow.set(e, 0); marci@411: // while (max_flow_test.augmentOnShortestPath()) { } marci@648: typedef SageGraph MutableGraph; marci@411: // while (max_flow_test.augmentOnBlockingFlow1<MutableGraph>()) { marci@769: // while (max_flow_test.augmentOnBlockingFlow2()) { marci@769: // std::cout << max_flow_test.flowValue() << std::endl; marci@769: // } marci@769: max_flow_test.run(); marci@411: std::cout << "max flow value: " << max_flow_test.flowValue() << std::endl; marci@411: std::cout << "elapsed time: " << ts << std::endl; marci@411: marci@411: ts.reset(); marci@482: FOR_EACH_LOC(stGW::EdgeIt, e, stgw) flow.set(e, 0); marci@482: max_flow_test.run(); marci@411: std::cout << "pre flow value: " << max_flow_test.flowValue() << std::endl; marci@411: std::cout << "elapsed time: " << ts << std::endl; marci@411: marci@411: ts.reset(); marci@413: leda_list<leda_edge> ml=MAX_CARD_BIPARTITE_MATCHING(lg); marci@413: std::cout << "leda matching value: " << ml.size() << std::endl; marci@411: std::cout << "elapsed time: " << ts << std::endl; marci@411: marci@411: return 0; marci@411: }