marci@771: // -*- c++ -*-
marci@771: #include <iostream>
marci@771: #include <fstream>
marci@771: #include <vector>
marci@771: #include <cstdlib>
marci@771: 
marci@771: #include <LEDA/graph.h>
marci@771: #include <LEDA/mcb_matching.h>
marci@771: #include <LEDA/list.h>
marci@771: 
marci@771: #include <leda_graph_wrapper.h>
marci@771: #include <sage_graph.h>
marci@771: #include <dimacs.h>
marci@771: #include <time_measure.h>
marci@771: #include <edmonds_karp.h>
marci@771: 
marci@771: /**
marci@771:  * Inicializalja a veletlenszamgeneratort.
marci@771:  * Figyelem, ez nem jo igazi random szamokhoz,
marci@771:  * erre ne bizzad a titkaidat!
marci@771:  */
marci@771: void random_init()
marci@771: {
marci@771: 	unsigned int seed = getpid();
marci@771: 	seed |= seed << 15;
marci@771: 	seed ^= time(0);
marci@771: 
marci@771: 	srand(seed);
marci@771: }
marci@771: 
marci@771: /**
marci@771:  * Egy veletlen int-et ad vissza 0 es m-1 kozott.
marci@771:  */
marci@771: int random(int m)
marci@771: {
marci@771: 	return int( double(m) * rand() / (RAND_MAX + 1.0) );
marci@771: }
marci@771: 
alpar@921: using namespace lemon;
marci@771: 
marci@771: using std::cout; 
marci@771: using std::cin; 
marci@771: using std::endl;
marci@771: 
marci@771: int main() {
marci@771:    leda::graph g;
marci@771:    typedef LedaGraphWrapper<leda::graph> Graph;
marci@771:    Graph G(g);
marci@771: //  typedef ListGraph Graph;
marci@771: //  Graph G;
marci@771: 
marci@771:   typedef Graph::Node Node;
marci@771:   typedef Graph::NodeIt NodeIt;  
marci@771:   typedef Graph::Edge Edge;
marci@771:   typedef Graph::EdgeIt EdgeIt;
marci@771:   typedef Graph::OutEdgeIt OutEdgeIt;
marci@771:   typedef Graph::InEdgeIt InEdgeIt;
marci@771: 
marci@771:   //Node s, t;
marci@771:   //Graph::EdgeMap<int> cap(G);
marci@771:   //readDimacsMaxFlow(std::cin, G, s, t, cap);
marci@771:   std::vector<Node> s_nodes;
marci@771:   std::vector<Node> t_nodes;
marci@771: 
marci@771:   int a;
marci@771:   cout << "number of nodes in the first color class=";
marci@771:   cin >> a; 
marci@771:   int b;
marci@771:   cout << "number of nodes in the second color class=";
marci@771:   cin >> b; 
marci@771:   int m;
marci@771:   cout << "number of edges=";
marci@771:   cin >> m;   
marci@771: 
marci@771:   for(int i=0; i<a; ++i) {
marci@771:     s_nodes.push_back(G.addNode());
marci@771:   }
marci@771:   for(int i=0; i<a; ++i) {
marci@771:     t_nodes.push_back(G.addNode());
marci@771:   }
marci@771:   random_init();
marci@771:   for(int i=0; i<m; ++i) {
marci@771:     G.addEdge(s_nodes[random(a)], t_nodes[random(b)]);
marci@771:   }
marci@771:   
marci@771: //   G.addEdge(s_nodes[1], t_nodes[5-4]);
marci@771: //   G.addEdge(s_nodes[1], t_nodes[5-4]);
marci@771: //   G.addEdge(s_nodes[1], t_nodes[4-4]);
marci@771: //   G.addEdge(s_nodes[1], t_nodes[4-4]);
marci@771: //   G.addEdge(s_nodes[2], t_nodes[4-4]);
marci@771: //   G.addEdge(s_nodes[3], t_nodes[4-4]);
marci@771: 
marci@771:   leda_list<leda_node> A;
marci@771:   leda_list<leda_node> B;
marci@771:   Graph::NodeMap<bool> s_map(G); //false
marci@771:   Graph::NodeMap<bool> t_map(G); //false
marci@771:   
marci@771:   for(int i=0; i<a; ++i) { s_map.set(s_nodes[i], true); A+=s_nodes[i]; }
marci@771:   for(int i=0; i<b; ++i) { t_map.set(t_nodes[i], true); B+=t_nodes[i]; }
marci@771: 
marci@771: //   cout << "bfs and dfs iterator demo on the directed graph" << endl;
marci@771: //   for(NodeIt n=G.first<NodeIt>(); G.valid(n); G.next(n)) { 
marci@771: //     cout << G.id(n) << ": ";
marci@771: //     cout << "out edges: ";
marci@771: //     for(OutEdgeIt e=G.first<OutEdgeIt>(n); G.valid(e); G.next(e)) 
marci@771: //       cout << G.id(G.tail(e)) << "->" << G.id(G.head(e)) << " ";
marci@771: //     cout << "in edges: ";
marci@771: //     for(InEdgeIt e=G.first<InEdgeIt>(n); G.valid(e); G.next(e)) 
marci@771: //       cout << G.id(G.tail(e)) << "->" << G.id(G.head(e)) << " ";
marci@771: //     cout << endl;
marci@771: //   }
marci@771: 
marci@771: 
marci@771:   {
marci@771:     std::cout << "on-the-fly max bipartite matching (Edmonds-Karp) demo on wrapped leda graph..." << std::endl;
marci@771:     Graph::EdgeMap<int> flow(G); //0 flow
marci@771:     Graph::EdgeMap<int> cap(G, 1);
marci@771: 
marci@771:     Timer ts;
marci@771:     ts.reset();
marci@771: 
marci@771:     MaxMatching<Graph, int, Graph::EdgeMap<int>, Graph::EdgeMap<int> > max_flow_test(G, s_map, t_map, flow, cap);
marci@771:     int i=0;
marci@771:     while (max_flow_test.augmentOnShortestPath()) { 
marci@771: //       for(EdgeIt e=G.first<EdgeIt>(); G.valid(e); G.next(e))  
marci@771: // 	std::cout << G.id(G.tail(e)) << "-" << flow.get(e) << "->" << G.id(G.head(e)) << " ";
marci@771: //       std::cout<<std::endl;
marci@771:       ++i; 
marci@771:     }
marci@771: 
marci@771: //     std::cout << "maximum matching: "<< std::endl;
marci@771: //     for(EdgeIt e=G.first<EdgeIt>(); G.valid(e); G.next(e))  
marci@771: //       if (flow.get(e))
marci@771: // 	std::cout << G.id(G.tail(e)) << "-" << flow.get(e) << "->" << G.id(G.head(e)) << " ";
marci@771: //     std::cout<<std::endl;
marci@771: //     std::cout << "edges which are not in this maximum matching: "<< std::endl;
marci@771: //     for(EdgeIt e=G.first<EdgeIt>(); G.valid(e); G.next(e))  
marci@771: //       if (!flow.get(e))
marci@771: // 	std::cout << G.id(G.tail(e)) << "-" << flow.get(e) << "->" << G.id(G.head(e)) << " ";
marci@771: //     std::cout<<std::endl;
marci@771:     
marci@771:     std::cout << "elapsed time: " << ts << std::endl;
marci@771:     std::cout << "number of augmentation phases: " << i << std::endl; 
marci@771:     std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl;
marci@771:   }
marci@771: 
marci@771: //   {
marci@771: //     std::cout << "on-the-fly max bipartite matching demo (Hopcroft-Karp) on wrapped leda graph..." << std::endl;
marci@771: //     Graph::EdgeMap<int> flow(G); //0 flow
marci@771: //     Graph::EdgeMap<int> cap(G, 1);
marci@771: 
marci@771: //     Timer ts;
marci@771: //     ts.reset();
marci@771: 
marci@771: //     MaxMatching<Graph, int, Graph::EdgeMap<int>, Graph::EdgeMap<int> > max_flow_test(G, s_map, t_map, flow, cap);
marci@771: //     int i=0;
marci@771: //     while (max_flow_test.augmentOnBlockingFlow2()) { 
marci@771: // //       for(EdgeIt e=G.first<EdgeIt>(); G.valid(e); G.next(e))  
marci@771: // // 	std::cout << G.id(G.tail(e)) << "-" << flow.get(e) << "->" << G.id(G.head(e)) << " ";
marci@771: // //       std::cout<<std::endl;
marci@771: //       ++i; 
marci@771: //     }
marci@771: 
marci@771: // //     std::cout << "maximum matching: "<< std::endl;
marci@771: // //     for(EdgeIt e=G.first<EdgeIt>(); G.valid(e); G.next(e))  
marci@771: // //       if (flow.get(e))
marci@771: // // 	std::cout << G.id(G.tail(e)) << "-" << flow.get(e) << "->" << G.id(G.head(e)) << " ";
marci@771: // //     std::cout<<std::endl;
marci@771: // //     std::cout << "edges which are not in this maximum matching: "<< std::endl;
marci@771: // //     for(EdgeIt e=G.first<EdgeIt>(); G.valid(e); G.next(e))  
marci@771: // //       if (!flow.get(e))
marci@771: // // 	std::cout << G.id(G.tail(e)) << "-" << flow.get(e) << "->" << G.id(G.head(e)) << " ";
marci@771: // //     std::cout<<std::endl;
marci@771:     
marci@771: //     std::cout << "elapsed time: " << ts << std::endl;
marci@771: //     std::cout << "number of augmentation phases: " << i << std::endl; 
marci@771: //     std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl;
marci@771: //   }
marci@771: 
marci@771:   {
marci@771:     std::cout << "max bipartite matching (LEDA)..." << std::endl;
marci@771:     //Graph::EdgeMap<int> flow(G); //0 flow
marci@771:     //Graph::EdgeMap<int> cap(G, 1);
marci@771: 
marci@771:     leda_node_array<bool> NC(g);
marci@771: 
marci@771:     Timer ts;
marci@771:     ts.reset();
marci@771: 
marci@771:     //MaxMatching<Graph, int, Graph::EdgeMap<int>, Graph::EdgeMap<int> > max_flow_test(G, s_map, t_map, flow, cap);
marci@771:     //int i=0;
marci@771:     //while (max_flow_test.augmentOnShortestPath()) { ++i; }
marci@771:     
marci@771:     //leda_list<leda_edge> l=MAX_CARD_BIPARTITE_MATCHING_HK(g, A, B, NC, false);
marci@771:     leda_list<leda_edge> l=MAX_CARD_BIPARTITE_MATCHING(g);    
marci@771:     
marci@771: 
marci@771: //     std::cout << "maximum matching: "<< std::endl;
marci@771: //     for(EdgeIt e=G.first<EdgeIt>(); G.valid(e); G.next(e))  
marci@771: //       if (flow.get(e))
marci@771: // 	std::cout << G.id(G.tail(e)) << "-" << flow.get(e) << "->" << G.id(G.head(e)) << " ";
marci@771: //     std::cout<<std::endl;
marci@771: //     std::cout << "edges which are not in this maximum matching: "<< std::endl;
marci@771: //     for(EdgeIt e=G.first<EdgeIt>(); G.valid(e); G.next(e))  
marci@771: //       if (!flow.get(e))
marci@771: // 	std::cout << G.id(G.tail(e)) << "-" << flow.get(e) << "->" << G.id(G.head(e)) << " ";
marci@771: //     std::cout<<std::endl;
marci@771:     
marci@771:     
marci@771:     std::cout << "elapsed time: " << ts << std::endl;
marci@771:     //std::cout << "number of augmentation phases: " << i << std::endl; 
marci@771:     std::cout << "flow value: "<< l.size() << std::endl;
marci@771:   }
marci@771:   
marci@771:   
marci@771: 
marci@771:   return 0;
marci@771: }