src/work/jacint/max_flow_test.cc
changeset 1075 789bad021e2d
parent 921 818510fa3d99
equal deleted inserted replaced
3:842985be7199 4:a8bc0595338a
    43   Graph::NodeMap<bool> mincut(G);
    43   Graph::NodeMap<bool> mincut(G);
    44   max_flow_test_no_stack.minMinCut(mincut); 
    44   max_flow_test_no_stack.minMinCut(mincut); 
    45   int min_min_cut_value=0;
    45   int min_min_cut_value=0;
    46   EdgeIt e;
    46   EdgeIt e;
    47   for(G.first(e); G.valid(e); G.next(e)) {
    47   for(G.first(e); G.valid(e); G.next(e)) {
    48     if (mincut[G.tail(e)] && !mincut[G.head(e)]) min_min_cut_value+=cap[e];
    48     if (mincut[G.source(e)] && !mincut[G.target(e)]) min_min_cut_value+=cap[e];
    49   }
    49   }
    50 
    50 
    51   Graph::NodeMap<bool> cut(G);
    51   Graph::NodeMap<bool> cut(G);
    52   max_flow_test_no_stack.minCut(cut); 
    52   max_flow_test_no_stack.minCut(cut); 
    53   int min_cut_value=0;
    53   int min_cut_value=0;
    54   for(G.first(e); G.valid(e); G.next(e)) {
    54   for(G.first(e); G.valid(e); G.next(e)) {
    55     if (cut[G.tail(e)] && !cut[G.head(e)]) 
    55     if (cut[G.source(e)] && !cut[G.target(e)]) 
    56       min_cut_value+=cap[e];
    56       min_cut_value+=cap[e];
    57   }
    57   }
    58 
    58 
    59   Graph::NodeMap<bool> maxcut(G);
    59   Graph::NodeMap<bool> maxcut(G);
    60   max_flow_test_no_stack.maxMinCut(maxcut); 
    60   max_flow_test_no_stack.maxMinCut(maxcut); 
    61   int max_min_cut_value=0;
    61   int max_min_cut_value=0;
    62   for(G.first(e); G.valid(e); G.next(e)) {
    62   for(G.first(e); G.valid(e); G.next(e)) {
    63     if (maxcut[G.tail(e)] && !maxcut[G.head(e)]) 
    63     if (maxcut[G.source(e)] && !maxcut[G.target(e)]) 
    64       max_min_cut_value+=cap[e];
    64       max_min_cut_value+=cap[e];
    65       }
    65       }
    66 
    66 
    67   std::cout << "\n Checking the result without stack: " <<std::endl;  
    67   std::cout << "\n Checking the result without stack: " <<std::endl;  
    68   std::cout << "Flow value: "<< max_flow_test_no_stack.flowValue() << std::endl;
    68   std::cout << "Flow value: "<< max_flow_test_no_stack.flowValue() << std::endl;
    89   
    89   
    90   Graph::NodeMap<bool> mincut2(G);
    90   Graph::NodeMap<bool> mincut2(G);
    91   max_flow_test.minMinCut(mincut2); 
    91   max_flow_test.minMinCut(mincut2); 
    92   int min_min_cut_value2=0;
    92   int min_min_cut_value2=0;
    93     for(G.first(e); G.valid(e); G.next(e)) {
    93     for(G.first(e); G.valid(e); G.next(e)) {
    94     if (mincut2[G.tail(e)] && !mincut2[G.head(e)]) min_min_cut_value2+=cap[e];
    94     if (mincut2[G.source(e)] && !mincut2[G.target(e)]) min_min_cut_value2+=cap[e];
    95   }
    95   }
    96 
    96 
    97   Graph::NodeMap<bool> cut2(G);
    97   Graph::NodeMap<bool> cut2(G);
    98   max_flow_test.minCut(cut2); 
    98   max_flow_test.minCut(cut2); 
    99   int min_cut_value2=0;
    99   int min_cut_value2=0;
   100   for(G.first(e); G.valid(e); G.next(e)) {
   100   for(G.first(e); G.valid(e); G.next(e)) {
   101     if (cut2[G.tail(e)] && !cut2[G.head(e)]) 
   101     if (cut2[G.source(e)] && !cut2[G.target(e)]) 
   102       min_cut_value2+=cap[e];
   102       min_cut_value2+=cap[e];
   103   }
   103   }
   104 
   104 
   105   Graph::NodeMap<bool> maxcut2(G);
   105   Graph::NodeMap<bool> maxcut2(G);
   106   max_flow_test.maxMinCut(maxcut2); 
   106   max_flow_test.maxMinCut(maxcut2); 
   107   int max_min_cut_value2=0;
   107   int max_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 (maxcut2[G.tail(e)] && !maxcut2[G.head(e)]) 
   109     if (maxcut2[G.source(e)] && !maxcut2[G.target(e)]) 
   110       max_min_cut_value2+=cap[e];
   110       max_min_cut_value2+=cap[e];
   111       }
   111       }
   112   
   112   
   113   std::cout << "\n Checking the result: " <<std::endl;  
   113   std::cout << "\n Checking the result: " <<std::endl;  
   114   std::cout << "Flow value: "<< max_flow_test.flowValue() << std::endl;
   114   std::cout << "Flow value: "<< max_flow_test.flowValue() << std::endl;
   128   
   128   
   129   Graph::NodeMap<bool> mincut3(G);
   129   Graph::NodeMap<bool> mincut3(G);
   130   max_flow_test3.minMinCut(mincut3); 
   130   max_flow_test3.minMinCut(mincut3); 
   131   int min_min_cut_value3=0;
   131   int min_min_cut_value3=0;
   132   for(G.first(e); G.valid(e); G.next(e)) {
   132   for(G.first(e); G.valid(e); G.next(e)) {
   133     if (mincut3[G.tail(e)] && !mincut3[G.head(e)]) min_min_cut_value3+=cap[e];
   133     if (mincut3[G.source(e)] && !mincut3[G.target(e)]) min_min_cut_value3+=cap[e];
   134   }
   134   }
   135 
   135 
   136   Graph::NodeMap<bool> cut3(G);
   136   Graph::NodeMap<bool> cut3(G);
   137   max_flow_test3.minCut(cut3); 
   137   max_flow_test3.minCut(cut3); 
   138   int min_cut_value3=0;
   138   int min_cut_value3=0;
   139   for(G.first(e); G.valid(e); G.next(e)) {
   139   for(G.first(e); G.valid(e); G.next(e)) {
   140     if (cut3[G.tail(e)] && !cut3[G.head(e)]) 
   140     if (cut3[G.source(e)] && !cut3[G.target(e)]) 
   141       min_cut_value3+=cap[e];
   141       min_cut_value3+=cap[e];
   142   }
   142   }
   143 
   143 
   144   Graph::NodeMap<bool> maxcut3(G);
   144   Graph::NodeMap<bool> maxcut3(G);
   145   max_flow_test3.maxMinCut(maxcut3); 
   145   max_flow_test3.maxMinCut(maxcut3); 
   146   int max_min_cut_value3=0;
   146   int max_min_cut_value3=0;
   147   for(G.first(e); G.valid(e); G.next(e)) {
   147   for(G.first(e); G.valid(e); G.next(e)) {
   148     if (maxcut3[G.tail(e)] && !maxcut3[G.head(e)]) 
   148     if (maxcut3[G.source(e)] && !maxcut3[G.target(e)]) 
   149       max_min_cut_value3+=cap[e];
   149       max_min_cut_value3+=cap[e];
   150   }
   150   }
   151 
   151 
   152   std::cout << "\n Checking the result: " <<std::endl;  
   152   std::cout << "\n Checking the result: " <<std::endl;  
   153   std::cout << "Flow value: "<< max_flow_test3.flowValue() << std::endl;
   153   std::cout << "Flow value: "<< max_flow_test3.flowValue() << std::endl;