[174] | 1 | // -*- c++ -*- |
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[73] | 2 | #include <iostream> |
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| 3 | #include <fstream> |
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| 4 | |
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[174] | 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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[73] | 9 | #include <time_measure.h> |
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[155] | 10 | #include <graph_wrapper.h> |
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[73] | 11 | |
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[105] | 12 | using namespace hugo; |
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[73] | 13 | |
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| 14 | // Use a DIMACS max flow file as stdin. |
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| 15 | // read_dimacs_demo < dimacs_max_flow_file |
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[139] | 16 | |
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[174] | 17 | |
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| 18 | // struct Ize { |
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| 19 | // }; |
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[139] | 20 | |
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[174] | 21 | // struct Mize { |
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| 22 | // Ize bumm; |
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| 23 | // }; |
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[139] | 24 | |
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[174] | 25 | // template <typename B> |
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| 26 | // class Huha { |
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| 27 | // public: |
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| 28 | // int u; |
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| 29 | // B brr; |
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| 30 | // }; |
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| 31 | |
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[139] | 32 | |
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[73] | 33 | int main(int, char **) { |
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| 34 | |
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[174] | 35 | typedef ListGraph MutableGraph; |
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[139] | 36 | |
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[243] | 37 | //typedef SmartGraph Graph; |
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| 38 | typedef ListGraph Graph; |
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[174] | 39 | typedef Graph::Node Node; |
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| 40 | typedef Graph::EdgeIt EdgeIt; |
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[139] | 41 | |
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| 42 | |
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[174] | 43 | // Mize mize[10]; |
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| 44 | // Mize bize[0]; |
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| 45 | // Mize zize; |
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| 46 | // typedef Mize Tize[0]; |
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[146] | 47 | |
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[174] | 48 | // std::cout << &zize << " " << sizeof(mize) << sizeof(Tize) << std::endl; |
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| 49 | // std::cout << sizeof(bize) << std::endl; |
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[146] | 50 | |
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| 51 | |
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[174] | 52 | // Huha<Tize> k; |
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| 53 | // std::cout << sizeof(k) << std::endl; |
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[139] | 54 | |
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[174] | 55 | |
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| 56 | // struct Bumm { |
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| 57 | // //int a; |
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| 58 | // bool b; |
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| 59 | // }; |
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| 60 | |
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| 61 | // std::cout << sizeof(Bumm) << std::endl; |
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| 62 | |
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| 63 | |
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| 64 | Graph G; |
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| 65 | Node s, t; |
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| 66 | Graph::EdgeMap<int> cap(G); |
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[73] | 67 | readDimacsMaxFlow(std::cin, G, s, t, cap); |
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[155] | 68 | |
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[174] | 69 | // typedef TrivGraphWrapper<Graph> TGW; |
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| 70 | // TGW gw(G); |
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| 71 | // TGW::NodeIt sw; |
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| 72 | // gw./*getF*/first(sw); |
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| 73 | // std::cout << "p1:" << gw.nodeNum() << std::endl; |
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| 74 | // gw.erase(sw); |
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| 75 | // std::cout << "p2:" << gw.nodeNum() << std::endl; |
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| 76 | |
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| 77 | // typedef const Graph cLG; |
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| 78 | // typedef TrivGraphWrapper<const cLG> CTGW; |
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| 79 | // CTGW cgw(G); |
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| 80 | // CTGW::NodeIt csw; |
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| 81 | // cgw./*getF*/first(csw); |
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| 82 | // std::cout << "p1:" << cgw.nodeNum() << std::endl; |
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| 83 | // //cgw.erase(csw); |
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| 84 | // std::cout << "p2:" << cgw.nodeNum() << std::endl; |
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| 85 | |
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[73] | 86 | |
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[133] | 87 | { |
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[243] | 88 | //std::cout << "SmartGraph..." << std::endl; |
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[174] | 89 | std::cout << "edmonds karp demo (physical blocking flow augmentation)..." << std::endl; |
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| 90 | Graph::EdgeMap<int> flow(G); //0 flow |
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[73] | 91 | |
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[174] | 92 | Timer ts; |
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| 93 | ts.reset(); |
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| 94 | |
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| 95 | MaxFlow<Graph, int, Graph::EdgeMap<int>, Graph::EdgeMap<int> > max_flow_test(G, s, t, flow, cap); |
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| 96 | //max_flow_test.augmentWithBlockingFlow<Graph>(); |
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| 97 | int i=0; |
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| 98 | while (max_flow_test.augmentOnBlockingFlow<MutableGraph>()) { |
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| 99 | // for(EdgeIt e=G.template first<EdgeIt>(); e.valid(); ++e) { |
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[168] | 100 | // std::cout<<"("<<G.tail(e)<< "-"<<flow.get(e)<<"->"<<G.head(e)<<") "; |
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| 101 | // } |
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| 102 | // std::cout<<std::endl; |
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[174] | 103 | ++i; |
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| 104 | } |
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[168] | 105 | |
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[174] | 106 | // std::cout << "maximum flow: "<< std::endl; |
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| 107 | // for(EdgeIt e=G.first<EdgeIt>(); e.valid(); ++e) { |
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| 108 | // std::cout<<"("<<G.tail(e)<< "-"<<flow.get(e)<<"->"<<G.head(e)<<") "; |
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| 109 | // } |
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| 110 | // std::cout<<std::endl; |
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| 111 | std::cout << "elapsed time: " << ts << std::endl; |
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| 112 | std::cout << "number of augmentation phases: " << i << std::endl; |
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| 113 | std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl; |
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[168] | 114 | } |
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| 115 | |
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| 116 | { |
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[243] | 117 | //std::cout << "SmartGraph..." << std::endl; |
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[206] | 118 | std::cout << "edmonds karp demo (physical blocking flow 1 augmentation)..." << std::endl; |
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| 119 | Graph::EdgeMap<int> flow(G); //0 flow |
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| 120 | |
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| 121 | Timer ts; |
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| 122 | ts.reset(); |
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| 123 | |
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| 124 | MaxFlow<Graph, int, Graph::EdgeMap<int>, Graph::EdgeMap<int> > max_flow_test(G, s, t, flow, cap); |
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| 125 | //max_flow_test.augmentWithBlockingFlow<Graph>(); |
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| 126 | int i=0; |
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| 127 | while (max_flow_test.augmentOnBlockingFlow1<MutableGraph>()) { |
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| 128 | // for(EdgeIt e=G.template first<EdgeIt>(); e.valid(); ++e) { |
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| 129 | // std::cout<<"("<<G.tail(e)<< "-"<<flow.get(e)<<"->"<<G.head(e)<<") "; |
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| 130 | // } |
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| 131 | // std::cout<<std::endl; |
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| 132 | ++i; |
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| 133 | } |
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| 134 | |
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| 135 | // std::cout << "maximum flow: "<< std::endl; |
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| 136 | // for(EdgeIt e=G.first<EdgeIt>(); e.valid(); ++e) { |
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| 137 | // std::cout<<"("<<G.tail(e)<< "-"<<flow.get(e)<<"->"<<G.head(e)<<") "; |
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| 138 | // } |
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| 139 | // std::cout<<std::endl; |
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| 140 | std::cout << "elapsed time: " << ts << std::endl; |
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| 141 | std::cout << "number of augmentation phases: " << i << std::endl; |
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| 142 | std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl; |
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| 143 | } |
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| 144 | |
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| 145 | { |
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[174] | 146 | std::cout << "edmonds karp demo (on-the-fly blocking flow augmentation)..." << std::endl; |
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| 147 | Graph::EdgeMap<int> flow(G); //0 flow |
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[168] | 148 | |
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[174] | 149 | Timer ts; |
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| 150 | ts.reset(); |
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| 151 | |
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| 152 | MaxFlow<Graph, int, Graph::EdgeMap<int>, Graph::EdgeMap<int> > max_flow_test(G, s, t, flow, cap); |
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| 153 | //max_flow_test.augmentWithBlockingFlow<Graph>(); |
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| 154 | int i=0; |
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| 155 | while (max_flow_test.augmentOnBlockingFlow2()) { |
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| 156 | // for(EdgeIt e=G.template first<EdgeIt>(); e.valid(); ++e) { |
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[168] | 157 | // std::cout<<"("<<G.tail(e)<< "-"<<flow.get(e)<<"->"<<G.head(e)<<") "; |
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| 158 | // } |
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| 159 | // std::cout<<std::endl; |
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[174] | 160 | ++i; |
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| 161 | } |
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[133] | 162 | |
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[174] | 163 | // std::cout << "maximum flow: "<< std::endl; |
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| 164 | // for(EdgeIt e=G.first<EdgeIt>(); e.valid(); ++e) { |
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| 165 | // std::cout<<"("<<G.tail(e)<< "-"<<flow.get(e)<<"->"<<G.head(e)<<") "; |
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| 166 | // } |
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| 167 | // std::cout<<std::endl; |
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| 168 | std::cout << "elapsed time: " << ts << std::endl; |
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| 169 | std::cout << "number of augmentation phases: " << i << std::endl; |
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| 170 | std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl; |
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[133] | 171 | } |
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| 172 | |
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| 173 | { |
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[174] | 174 | std::cout << "edmonds karp demo (on-the-fly shortest path augmentation)..." << std::endl; |
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| 175 | Graph::EdgeMap<int> flow(G); //0 flow |
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[133] | 176 | |
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[174] | 177 | Timer ts; |
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| 178 | ts.reset(); |
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| 179 | |
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| 180 | MaxFlow<Graph, int, Graph::EdgeMap<int>, Graph::EdgeMap<int> > max_flow_test(G, s, t, flow, cap); |
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| 181 | //max_flow_test.augmentWithBlockingFlow<Graph>(); |
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| 182 | int i=0; |
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| 183 | while (max_flow_test.augmentOnShortestPath()) { |
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| 184 | // for(EdgeIt e=G.template first<EdgeIt>(); e.valid(); ++e) { |
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[168] | 185 | // std::cout<<"("<<G.tail(e)<< "-"<<flow.get(e)<<"->"<<G.head(e)<<") "; |
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| 186 | // } |
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| 187 | // std::cout<<std::endl; |
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[174] | 188 | ++i; |
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| 189 | } |
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| 190 | |
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| 191 | // std::cout << "maximum flow: "<< std::endl; |
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| 192 | // for(EdgeIt e=G.first<EdgeIt>(); e.valid(); ++e) { |
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| 193 | // std::cout<<"("<<G.tail(e)<< "-"<<flow.get(e)<<"->"<<G.head(e)<<") "; |
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| 194 | // } |
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| 195 | // std::cout<<std::endl; |
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| 196 | std::cout << "elapsed time: " << ts << std::endl; |
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| 197 | std::cout << "number of augmentation phases: " << i << std::endl; |
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| 198 | std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl; |
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[168] | 199 | } |
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[133] | 200 | |
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[73] | 201 | |
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| 202 | return 0; |
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| 203 | } |
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