src/work/jacint/preflow_excess_test.cc
changeset 1062 8226427845bc
parent 921 818510fa3d99
equal deleted inserted replaced
1:b452b5aedbc4 2:c0ba9cd0ea1c
    50   Graph::NodeMap<bool> mincut(G);
    50   Graph::NodeMap<bool> mincut(G);
    51   max_flow_test.minMinCut(mincut); 
    51   max_flow_test.minMinCut(mincut); 
    52   int min_min_cut_value=0;
    52   int min_min_cut_value=0;
    53   EdgeIt e;
    53   EdgeIt e;
    54   for(G.first(e); G.valid(e); G.next(e)) {
    54   for(G.first(e); G.valid(e); G.next(e)) {
    55     if (mincut[G.tail(e)] && !mincut[G.head(e)]) min_min_cut_value+=cap[e];
    55     if (mincut[G.source(e)] && !mincut[G.target(e)]) min_min_cut_value+=cap[e];
    56   }
    56   }
    57 
    57 
    58   Graph::NodeMap<bool> cut(G);
    58   Graph::NodeMap<bool> cut(G);
    59   max_flow_test.minCut(cut); 
    59   max_flow_test.minCut(cut); 
    60   int min_cut_value=0;
    60   int min_cut_value=0;
    61   for(G.first(e); G.valid(e); G.next(e)) {
    61   for(G.first(e); G.valid(e); G.next(e)) {
    62     if (cut[G.tail(e)] && !cut[G.head(e)]) 
    62     if (cut[G.source(e)] && !cut[G.target(e)]) 
    63       min_cut_value+=cap[e];
    63       min_cut_value+=cap[e];
    64   }
    64   }
    65 
    65 
    66   Graph::NodeMap<bool> maxcut(G);
    66   Graph::NodeMap<bool> maxcut(G);
    67   max_flow_test.maxMinCut(maxcut); 
    67   max_flow_test.maxMinCut(maxcut); 
    68   int max_min_cut_value=0;
    68   int max_min_cut_value=0;
    69   for(G.first(e); G.valid(e); G.next(e)) {
    69   for(G.first(e); G.valid(e); G.next(e)) {
    70     if (maxcut[G.tail(e)] && !maxcut[G.head(e)]) 
    70     if (maxcut[G.source(e)] && !maxcut[G.target(e)]) 
    71       max_min_cut_value+=cap[e];
    71       max_min_cut_value+=cap[e];
    72       }
    72       }
    73 
    73 
    74   std::cout << "\n Checking the result: " <<std::endl;  
    74   std::cout << "\n Checking the result: " <<std::endl;  
    75   std::cout << "Flow value: "<< max_flow_test.flowValue() << std::endl;
    75   std::cout << "Flow value: "<< max_flow_test.flowValue() << std::endl;
    97   
    97   
    98   Graph::NodeMap<bool> mincut2(G);
    98   Graph::NodeMap<bool> mincut2(G);
    99   max_flow_test2.minMinCut(mincut2); 
    99   max_flow_test2.minMinCut(mincut2); 
   100   int min_min_cut_value2=0;
   100   int min_min_cut_value2=0;
   101     for(G.first(e); G.valid(e); G.next(e)) {
   101     for(G.first(e); G.valid(e); G.next(e)) {
   102     if (mincut2[G.tail(e)] && !mincut2[G.head(e)]) min_min_cut_value2+=cap[e];
   102     if (mincut2[G.source(e)] && !mincut2[G.target(e)]) min_min_cut_value2+=cap[e];
   103   }
   103   }
   104 
   104 
   105   Graph::NodeMap<bool> cut2(G);
   105   Graph::NodeMap<bool> cut2(G);
   106   max_flow_test2.minCut(cut2); 
   106   max_flow_test2.minCut(cut2); 
   107   int min_cut_value2=0;
   107   int min_cut_value2=0;
   108   for(G.first(e); G.valid(e); G.next(e)) {
   108   for(G.first(e); G.valid(e); G.next(e)) {
   109     if (cut2[G.tail(e)] && !cut2[G.head(e)]) 
   109     if (cut2[G.source(e)] && !cut2[G.target(e)]) 
   110       min_cut_value2+=cap[e];
   110       min_cut_value2+=cap[e];
   111   }
   111   }
   112 
   112 
   113   Graph::NodeMap<bool> maxcut2(G);
   113   Graph::NodeMap<bool> maxcut2(G);
   114   max_flow_test2.maxMinCut(maxcut2); 
   114   max_flow_test2.maxMinCut(maxcut2); 
   115   int max_min_cut_value2=0;
   115   int max_min_cut_value2=0;
   116   for(G.first(e); G.valid(e); G.next(e)) {
   116   for(G.first(e); G.valid(e); G.next(e)) {
   117     if (maxcut2[G.tail(e)] && !maxcut2[G.head(e)]) 
   117     if (maxcut2[G.source(e)] && !maxcut2[G.target(e)]) 
   118       max_min_cut_value2+=cap[e];
   118       max_min_cut_value2+=cap[e];
   119       }
   119       }
   120   
   120   
   121   std::cout << "\n Checking the result: " <<std::endl;  
   121   std::cout << "\n Checking the result: " <<std::endl;  
   122   std::cout << "Flow value: "<< max_flow_test2.flowValue() << std::endl;
   122   std::cout << "Flow value: "<< max_flow_test2.flowValue() << std::endl;
   142   
   142   
   143   Graph::NodeMap<bool> mincut3(G);
   143   Graph::NodeMap<bool> mincut3(G);
   144   max_flow_test3.minMinCut(mincut3); 
   144   max_flow_test3.minMinCut(mincut3); 
   145   int min_min_cut_value3=0;
   145   int min_min_cut_value3=0;
   146   for(G.first(e); G.valid(e); G.next(e)) {
   146   for(G.first(e); G.valid(e); G.next(e)) {
   147     if (mincut3[G.tail(e)] && !mincut3[G.head(e)]) min_min_cut_value3+=cap[e];
   147     if (mincut3[G.source(e)] && !mincut3[G.target(e)]) min_min_cut_value3+=cap[e];
   148   }
   148   }
   149 
   149 
   150   Graph::NodeMap<bool> cut3(G);
   150   Graph::NodeMap<bool> cut3(G);
   151   max_flow_test3.minCut(cut3); 
   151   max_flow_test3.minCut(cut3); 
   152   int min_cut_value3=0;
   152   int min_cut_value3=0;
   153   for(G.first(e); G.valid(e); G.next(e)) {
   153   for(G.first(e); G.valid(e); G.next(e)) {
   154     if (cut3[G.tail(e)] && !cut3[G.head(e)]) 
   154     if (cut3[G.source(e)] && !cut3[G.target(e)]) 
   155       min_cut_value3+=cap[e];
   155       min_cut_value3+=cap[e];
   156   }
   156   }
   157 
   157 
   158   Graph::NodeMap<bool> maxcut3(G);
   158   Graph::NodeMap<bool> maxcut3(G);
   159   max_flow_test3.maxMinCut(maxcut3); 
   159   max_flow_test3.maxMinCut(maxcut3); 
   160   int max_min_cut_value3=0;
   160   int max_min_cut_value3=0;
   161   for(G.first(e); G.valid(e); G.next(e)) {
   161   for(G.first(e); G.valid(e); G.next(e)) {
   162     if (maxcut3[G.tail(e)] && !maxcut3[G.head(e)]) 
   162     if (maxcut3[G.source(e)] && !maxcut3[G.target(e)]) 
   163       max_min_cut_value3+=cap[e];
   163       max_min_cut_value3+=cap[e];
   164       }
   164       }
   165 
   165 
   166   std::cout << "\n Checking the result: " <<std::endl;  
   166   std::cout << "\n Checking the result: " <<std::endl;  
   167   std::cout << "Flow value: "<< max_flow_test3.flowValue() << std::endl;
   167   std::cout << "Flow value: "<< max_flow_test3.flowValue() << std::endl;