src/work/jacint/preflow.cc
changeset 138 c6297c121409
parent 109 fc5982b39e10
child 211 9222a9b8b323
equal deleted inserted replaced
0:81609e2e5da1 1:0cfbf0e91e6e
    28     preflow<ListGraph, int> max_flow_test(G, s, t, cap);
    28     preflow<ListGraph, int> max_flow_test(G, s, t, cap);
    29     double post_time=currTime();
    29     double post_time=currTime();
    30     if ( mintime > post_time-pre_time ) mintime = post_time-pre_time;
    30     if ( mintime > post_time-pre_time ) mintime = post_time-pre_time;
    31   }
    31   }
    32 
    32 
    33   preflow<ListGraph, int> max_flow_test(G, s, t, cap);
    33   double pre_time=currTime();
    34   
    34     preflow<ListGraph, int> max_flow_test(G, s, t, cap);
       
    35   double post_time=currTime();
       
    36     
    35   ListGraph::NodeMap<bool> cut(G);
    37   ListGraph::NodeMap<bool> cut(G);
    36   max_flow_test.minCut(cut); 
    38   max_flow_test.minCut(cut); 
    37   int min_cut_value=0;
    39   int min_cut_value=0;
    38   for(EachEdgeIt e=G.first<EachEdgeIt>(); e.valid(); ++e) {
    40   for(EachEdgeIt e=G.first<EachEdgeIt>(); e.valid(); ++e) {
    39     if (cut.get(G.tail(e)) && !cut.get(G.head(e))) min_cut_value+=cap.get(e);
    41     if (cut.get(G.tail(e)) && !cut.get(G.head(e))) min_cut_value+=cap.get(e);
    54     if (cut2.get(G.tail(e)) && !cut2.get(G.head(e))) 
    56     if (cut2.get(G.tail(e)) && !cut2.get(G.head(e))) 
    55       max_min_cut_value+=cap.get(e);
    57       max_min_cut_value+=cap.get(e);
    56       }
    58       }
    57   
    59   
    58   std::cout << "min time of 10 runs: " << mintime << " sec"<< std::endl; 
    60   std::cout << "min time of 10 runs: " << mintime << " sec"<< std::endl; 
       
    61   std::cout << "phase 0: " << max_flow_test.time-pre_time 
       
    62 	    << " sec"<< std::endl; 
       
    63   std::cout << "phase 1: " << post_time-max_flow_test.time 
       
    64 	    << " sec"<< std::endl; 
    59   std::cout << "flow value: "<< max_flow_test.maxFlow() << std::endl;
    65   std::cout << "flow value: "<< max_flow_test.maxFlow() << std::endl;
    60   std::cout << "min cut value: "<< min_cut_value << std::endl;
    66   std::cout << "min cut value: "<< min_cut_value << std::endl;
    61   std::cout << "min min cut value: "<< min_min_cut_value << std::endl;
    67   std::cout << "min min cut value: "<< min_min_cut_value << std::endl;
    62   std::cout << "max min cut value: "<< max_min_cut_value << 
    68   std::cout << "max min cut value: "<< max_min_cut_value << 
    63     std::endl<< std::endl;
    69     std::endl<< std::endl;