[281] | 1 | // -*- c++ -*- |
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| 2 | #include <iostream> |
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| 3 | #include <fstream> |
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| 4 | |
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| 5 | #include <list_graph.h> |
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| 6 | #include <smart_graph.h> |
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| 7 | #include <dimacs.h> |
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| 8 | #include <edmonds_karp.h> |
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| 9 | #include <time_measure.h> |
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| 10 | #include <graph_wrapper.h> |
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| 11 | |
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| 12 | class CM { |
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| 13 | public: |
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| 14 | template<typename T> int get(T) const {return 1;} |
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| 15 | }; |
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| 16 | |
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[921] | 17 | using namespace lemon; |
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[281] | 18 | |
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| 19 | // Use a DIMACS max flow file as stdin. |
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| 20 | // read_dimacs_demo < dimacs_max_flow_file |
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| 21 | |
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| 22 | |
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| 23 | // struct Ize { |
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| 24 | // }; |
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| 25 | |
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| 26 | // struct Mize { |
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| 27 | // Ize bumm; |
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| 28 | // }; |
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| 29 | |
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| 30 | // template <typename B> |
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| 31 | // class Huha { |
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| 32 | // public: |
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| 33 | // int u; |
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| 34 | // B brr; |
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| 35 | // }; |
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| 36 | |
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| 37 | |
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| 38 | int main(int, char **) { |
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| 39 | |
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| 40 | typedef ListGraph MutableGraph; |
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| 41 | |
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| 42 | //typedef SmartGraph Graph; |
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| 43 | typedef ListGraph Graph; |
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| 44 | typedef Graph::Node Node; |
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| 45 | typedef Graph::EdgeIt EdgeIt; |
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| 46 | |
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| 47 | |
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| 48 | // Mize mize[10]; |
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| 49 | // Mize bize[0]; |
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| 50 | // Mize zize; |
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| 51 | // typedef Mize Tize[0]; |
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| 52 | |
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| 53 | // std::cout << &zize << " " << sizeof(mize) << sizeof(Tize) << std::endl; |
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| 54 | // std::cout << sizeof(bize) << std::endl; |
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| 55 | |
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| 56 | |
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| 57 | // Huha<Tize> k; |
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| 58 | // std::cout << sizeof(k) << std::endl; |
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| 59 | |
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| 60 | |
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| 61 | // struct Bumm { |
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| 62 | // //int a; |
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| 63 | // bool b; |
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| 64 | // }; |
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| 65 | |
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| 66 | // std::cout << sizeof(Bumm) << std::endl; |
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| 67 | |
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| 68 | |
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| 69 | Graph G; |
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| 70 | Node s, t; |
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| 71 | Graph::EdgeMap<int> cap(G); |
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| 72 | readDimacsMaxFlow(std::cin, G, s, t, cap); |
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| 73 | |
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| 74 | // typedef TrivGraphWrapper<Graph> TGW; |
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| 75 | // TGW gw(G); |
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| 76 | // TGW::NodeIt sw; |
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| 77 | // gw./*getF*/first(sw); |
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| 78 | // std::cout << "p1:" << gw.nodeNum() << std::endl; |
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| 79 | // gw.erase(sw); |
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| 80 | // std::cout << "p2:" << gw.nodeNum() << std::endl; |
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| 81 | |
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| 82 | // typedef const Graph cLG; |
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| 83 | // typedef TrivGraphWrapper<const cLG> CTGW; |
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| 84 | // CTGW cgw(G); |
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| 85 | // CTGW::NodeIt csw; |
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| 86 | // cgw./*getF*/first(csw); |
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| 87 | // std::cout << "p1:" << cgw.nodeNum() << std::endl; |
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| 88 | // //cgw.erase(csw); |
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| 89 | // std::cout << "p2:" << cgw.nodeNum() << std::endl; |
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| 90 | |
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| 91 | |
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| 92 | { |
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| 93 | typedef TrivGraphWrapper<const Graph> GW; |
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| 94 | GW gw(G); |
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| 95 | std::cout << "edmonds karp demo (physical blocking flow augmentation)..." << std::endl; |
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| 96 | GW::EdgeMap<int> flow(gw); //0 flow |
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| 97 | |
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| 98 | Timer ts; |
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| 99 | ts.reset(); |
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| 100 | |
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| 101 | typedef GW::EdgeMapWrapper< Graph::EdgeMap<int>, int > EMW; |
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| 102 | EMW cw(cap); |
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| 103 | MaxFlow<GW, int, GW::EdgeMap<int>, EMW > max_flow_test(gw, s, t, flow, cw); |
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| 104 | int i=0; |
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| 105 | while (max_flow_test.augmentOnBlockingFlow<MutableGraph>()) { |
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| 106 | // for(EdgeIt e=G.template first<EdgeIt>(); e.valid(); ++e) { |
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| 107 | // std::cout<<"("<<G.tail(e)<< "-"<<flow.get(e)<<"->"<<G.head(e)<<") "; |
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| 108 | // } |
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| 109 | // std::cout<<std::endl; |
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| 110 | ++i; |
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| 111 | } |
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| 112 | |
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| 113 | // std::cout << "maximum flow: "<< std::endl; |
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| 114 | // for(EdgeIt e=G.first<EdgeIt>(); e.valid(); ++e) { |
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| 115 | // std::cout<<"("<<G.tail(e)<< "-"<<flow.get(e)<<"->"<<G.head(e)<<") "; |
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| 116 | // } |
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| 117 | // std::cout<<std::endl; |
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| 118 | std::cout << "elapsed time: " << ts << std::endl; |
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| 119 | std::cout << "number of augmentation phases: " << i << std::endl; |
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| 120 | std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl; |
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| 121 | } |
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| 122 | |
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| 123 | { |
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| 124 | typedef TrivGraphWrapper<const Graph> GW; |
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| 125 | GW gw(G); |
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| 126 | std::cout << "edmonds karp demo (physical blocking flow 1 augmentation)..." << std::endl; |
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| 127 | GW::EdgeMap<int> flow(gw); //0 flow |
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| 128 | |
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| 129 | Timer ts; |
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| 130 | ts.reset(); |
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| 131 | |
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| 132 | typedef GW::EdgeMapWrapper< Graph::EdgeMap<int>, int > EMW; |
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| 133 | EMW cw(cap); |
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| 134 | MaxFlow<GW, int, GW::EdgeMap<int>, EMW > max_flow_test(gw, s, t, flow, cw); |
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| 135 | int i=0; |
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| 136 | while (max_flow_test.augmentOnBlockingFlow1<MutableGraph>()) { |
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| 137 | // for(EdgeIt e=G.template first<EdgeIt>(); e.valid(); ++e) { |
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| 138 | // std::cout<<"("<<G.tail(e)<< "-"<<flow.get(e)<<"->"<<G.head(e)<<") "; |
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| 139 | // } |
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| 140 | // std::cout<<std::endl; |
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| 141 | ++i; |
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| 142 | } |
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| 143 | |
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| 144 | // std::cout << "maximum flow: "<< std::endl; |
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| 145 | // for(EdgeIt e=G.first<EdgeIt>(); e.valid(); ++e) { |
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| 146 | // std::cout<<"("<<G.tail(e)<< "-"<<flow.get(e)<<"->"<<G.head(e)<<") "; |
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| 147 | // } |
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| 148 | // std::cout<<std::endl; |
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| 149 | std::cout << "elapsed time: " << ts << std::endl; |
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| 150 | std::cout << "number of augmentation phases: " << i << std::endl; |
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| 151 | std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl; |
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| 152 | } |
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| 153 | |
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| 154 | { |
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| 155 | typedef TrivGraphWrapper<const Graph> GW; |
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| 156 | GW gw(G); |
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| 157 | std::cout << "edmonds karp demo (on-the-fly blocking flow augmentation)..." << std::endl; |
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| 158 | GW::EdgeMap<int> flow(gw); //0 flow |
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| 159 | |
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| 160 | Timer ts; |
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| 161 | ts.reset(); |
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| 162 | |
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| 163 | typedef GW::EdgeMapWrapper< Graph::EdgeMap<int>, int > EMW; |
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| 164 | EMW cw(cap); |
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| 165 | MaxFlow<GW, int, GW::EdgeMap<int>, EMW > max_flow_test(gw, s, t, flow, cw); |
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| 166 | int i=0; |
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| 167 | while (max_flow_test.augmentOnBlockingFlow2()) { |
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| 168 | // for(EdgeIt e=G.template first<EdgeIt>(); e.valid(); ++e) { |
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| 169 | // std::cout<<"("<<G.tail(e)<< "-"<<flow.get(e)<<"->"<<G.head(e)<<") "; |
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| 170 | // } |
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| 171 | // std::cout<<std::endl; |
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| 172 | ++i; |
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| 173 | } |
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| 174 | |
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| 175 | // std::cout << "maximum flow: "<< std::endl; |
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| 176 | // for(EdgeIt e=G.first<EdgeIt>(); e.valid(); ++e) { |
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| 177 | // std::cout<<"("<<G.tail(e)<< "-"<<flow.get(e)<<"->"<<G.head(e)<<") "; |
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| 178 | // } |
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| 179 | // std::cout<<std::endl; |
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| 180 | std::cout << "elapsed time: " << ts << std::endl; |
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| 181 | std::cout << "number of augmentation phases: " << i << std::endl; |
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| 182 | std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl; |
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| 183 | } |
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| 184 | |
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| 185 | { |
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| 186 | typedef TrivGraphWrapper<const Graph> GW; |
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| 187 | GW gw(G); |
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| 188 | std::cout << "edmonds karp demo (on-the-fly shortest path augmentation)..." << std::endl; |
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| 189 | GW::EdgeMap<int> flow(gw); //0 flow |
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| 190 | |
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| 191 | Timer ts; |
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| 192 | ts.reset(); |
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| 193 | |
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| 194 | typedef GW::EdgeMapWrapper< Graph::EdgeMap<int>, int > EMW; |
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| 195 | EMW cw(cap); |
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| 196 | MaxFlow<GW, int, GW::EdgeMap<int>, EMW> max_flow_test(gw, s, t, flow, cw); |
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| 197 | int i=0; |
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| 198 | while (max_flow_test.augmentOnShortestPath()) { |
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| 199 | // for(EdgeIt e=G.template first<EdgeIt>(); e.valid(); ++e) { |
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| 200 | // std::cout<<"("<<G.tail(e)<< "-"<<flow.get(e)<<"->"<<G.head(e)<<") "; |
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| 201 | // } |
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| 202 | // std::cout<<std::endl; |
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| 203 | ++i; |
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| 204 | } |
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| 205 | |
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| 206 | // std::cout << "maximum flow: "<< std::endl; |
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| 207 | // for(EdgeIt e=G.first<EdgeIt>(); e.valid(); ++e) { |
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| 208 | // std::cout<<"("<<G.tail(e)<< "-"<<flow.get(e)<<"->"<<G.head(e)<<") "; |
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| 209 | // } |
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| 210 | // std::cout<<std::endl; |
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| 211 | std::cout << "elapsed time: " << ts << std::endl; |
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| 212 | std::cout << "number of augmentation phases: " << i << std::endl; |
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| 213 | std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl; |
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| 214 | } |
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| 215 | |
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| 216 | |
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| 217 | return 0; |
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| 218 | } |
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