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1 #include <iostream> |
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2 #include <fstream> |
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3 #include <list_graph.hh> |
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4 #include <dimacs.hh> |
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5 #include <edmonds_karp.hh> |
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6 |
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7 using namespace marci; |
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8 |
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9 // Use a DIMACS max flow file as stdin. |
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10 // read_dimacs_demo < dimacs_flow_file |
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11 int main(int, char **) { |
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12 typedef ListGraph::NodeIt NodeIt; |
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13 typedef ListGraph::EachEdgeIt EachEdgeIt; |
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14 |
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15 ListGraph G; |
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16 NodeIt s, t; |
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17 ListGraph::EdgeMap<int> cap(G); |
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18 readDimacsMaxFlow(std::cin, G, s, t, cap); |
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19 |
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20 std::cout << "augmenting path flow algorithm demo..." << std::endl; |
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21 ListGraph::EdgeMap<int> flow(G); //0 flow |
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22 MaxFlow<ListGraph, int, ListGraph::EdgeMap<int>, ListGraph::EdgeMap<int> > max_flow_test(G, s, t, flow, cap); |
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23 max_flow_test.run(); |
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24 |
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25 std::cout << "maximum flow: "<< std::endl; |
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26 for(EachEdgeIt e=G.first<EachEdgeIt>(); e.valid(); ++e) { |
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27 std::cout<<"("<<G.tail(e)<< "-"<<flow.get(e)<<"->"<<G.head(e)<<") "; |
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28 } |
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29 std::cout<<std::endl; |
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30 std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl; |
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31 |
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32 return 0; |
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33 } |