marci@73: #include <iostream>
marci@73: #include <string>
marci@73: 
marci@73: #include <boost/config.hpp>
marci@73: #include <boost/graph/edmunds_karp_max_flow.hpp>
marci@73: #include <boost/graph/adjacency_list.hpp>
marci@73: #include <boost/graph/read_dimacs.hpp>
marci@73: #include <boost/graph/graph_utility.hpp>
marci@73: 
marci@73: #include <time_measure.h>
marci@73: 
marci@73: // Use a DIMACS network flow file as stdin.
marci@73: // max_flow < max_flow.dat
marci@73: int main()
marci@73: {
marci@73:   using namespace boost;
marci@73: 
marci@73:   typedef adjacency_list_traits<vecS, vecS, directedS> Traits;
marci@73:   typedef adjacency_list<listS, vecS, directedS, 
marci@73:     property<vertex_name_t, std::string>,
marci@73:     property<edge_capacity_t, long,
marci@73:       property<edge_residual_capacity_t, long,
marci@73:         property<edge_reverse_t, Traits::edge_descriptor> > >
marci@73:   > Graph;
marci@73: 
marci@73:   Graph g;
marci@73: 
marci@73:   property_map<Graph, edge_capacity_t>::type 
marci@73:     capacity = get(edge_capacity, g);
marci@73:   property_map<Graph, edge_reverse_t>::type 
marci@73:     rev = get(edge_reverse, g);
marci@73:   property_map<Graph, edge_residual_capacity_t>::type 
marci@73:     residual_capacity = get(edge_residual_capacity, g);
marci@73: 
marci@73:   Traits::vertex_descriptor s, t;
marci@73:   read_dimacs_max_flow(g, capacity, rev, s, t);
marci@73: 
marci@73:   std::cout << "edmonds karp demo (BOOST)..." << endl;
marci@73:   double pre_time=currTime();
marci@73:   long flow = edmunds_karp_max_flow(g, s, t);
marci@73:   double post_time=currTime();
marci@73: 
marci@73:   //std::cout << "maximum flow: " << std::endl;
marci@73:   //graph_traits<Graph>::vertex_iterator u_iter, u_end;
marci@73:   //graph_traits<Graph>::out_edge_iterator ei, e_end;
marci@73:   //for (tie(u_iter, u_end) = vertices(g); u_iter != u_end; ++u_iter)
marci@73:   //  for (tie(ei, e_end) = out_edges(*u_iter, g); ei != e_end; ++ei)
marci@73:   //    if (capacity[*ei] > 0)
marci@73:   //      std::cout << "f " << *u_iter << " " << target(*ei, g) << " " 
marci@73:   //                << (capacity[*ei] - residual_capacity[*ei]) << std::endl;
marci@73:   //
marci@73:   //std::cout << std::endl;
marci@73:   std::cout << "elapsed time: " << post_time-pre_time << " sec"<< std::endl; 
marci@73:   std::cout << "flow value: " << flow << std::endl;
marci@73:   
marci@73:   return 0;
marci@73: }