[475] | 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 <time_measure.h> |
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| 9 | //#include <graph_wrapper.h> |
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| 10 | #include <preflow.h> |
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| 11 | //#include <preflow_res.h> |
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| 12 | #include <for_each_macros.h> |
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| 13 | |
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| 14 | using namespace hugo; |
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| 15 | |
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| 16 | // Use a DIMACS max flow file as stdin. |
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| 17 | // read_dimacs_demo < dimacs_max_flow_file |
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| 18 | |
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| 19 | |
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| 20 | // struct Ize { |
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| 21 | // }; |
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| 22 | |
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| 23 | // struct Mize { |
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| 24 | // Ize bumm; |
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| 25 | // }; |
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| 26 | |
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| 27 | // template <typename B> |
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| 28 | // class Huha { |
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| 29 | // public: |
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| 30 | // int u; |
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| 31 | // B brr; |
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| 32 | // }; |
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| 33 | |
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| 34 | |
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| 35 | int main(int, char **) { |
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| 36 | |
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| 37 | typedef ListGraph MutableGraph; |
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| 38 | |
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| 39 | typedef SmartGraph Graph; |
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| 40 | // typedef ListGraph Graph; |
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| 41 | typedef Graph::Node Node; |
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| 42 | typedef Graph::EdgeIt EdgeIt; |
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| 43 | |
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| 44 | |
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| 45 | // Mize mize[10]; |
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| 46 | // Mize bize[0]; |
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| 47 | // Mize zize; |
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| 48 | // typedef Mize Tize[0]; |
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| 49 | |
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| 50 | // std::cout << &zize << " " << sizeof(mize) << sizeof(Tize) << std::endl; |
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| 51 | // std::cout << sizeof(bize) << std::endl; |
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| 52 | |
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| 53 | |
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| 54 | // Huha<Tize> k; |
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| 55 | // std::cout << sizeof(k) << std::endl; |
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| 56 | |
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| 57 | |
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| 58 | // struct Bumm { |
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| 59 | // //int a; |
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| 60 | // bool b; |
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| 61 | // }; |
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| 62 | |
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| 63 | // std::cout << sizeof(Bumm) << std::endl; |
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| 64 | |
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| 65 | |
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| 66 | Graph G; |
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| 67 | Node s, t; |
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| 68 | Graph::EdgeMap<int> cap(G); |
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| 69 | readDimacsMaxFlow(std::cin, G, s, t, cap); |
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| 70 | Timer ts; |
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| 71 | Graph::EdgeMap<int> flow(G); //0 flow |
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[476] | 72 | MaxFlow<Graph, int, Graph::EdgeMap<int>, Graph::EdgeMap<int> > |
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| 73 | max_flow_test(G, s, t, cap, flow); |
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[475] | 74 | |
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| 75 | { |
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| 76 | std::cout << "preflow ..." << std::endl; |
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| 77 | ts.reset(); |
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[476] | 78 | max_flow_test.run(); |
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[475] | 79 | std::cout << "elapsed time: " << ts << std::endl; |
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[476] | 80 | std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl; |
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[475] | 81 | } |
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| 82 | |
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| 83 | { |
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| 84 | std::cout << "preflow ..." << std::endl; |
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| 85 | FOR_EACH_LOC(Graph::EdgeIt, e, G) flow.set(e, 0); |
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| 86 | ts.reset(); |
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[476] | 87 | max_flow_test.preflow(MaxFlow<Graph, int, Graph::EdgeMap<int>, Graph::EdgeMap<int> >::GEN_FLOW); |
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[475] | 88 | std::cout << "elapsed time: " << ts << std::endl; |
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[476] | 89 | std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl; |
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[475] | 90 | } |
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| 91 | |
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| 92 | // { |
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| 93 | // std::cout << "wrapped preflow ..." << std::endl; |
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| 94 | // FOR_EACH_LOC(Graph::EdgeIt, e, G) flow.set(e, 0); |
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| 95 | // ts.reset(); |
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| 96 | // pre_flow_res.run(); |
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| 97 | // std::cout << "elapsed time: " << ts << std::endl; |
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| 98 | // std::cout << "flow value: "<< pre_flow_test.flowValue() << std::endl; |
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| 99 | // } |
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| 100 | |
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| 101 | { |
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| 102 | std::cout << "physical blocking flow augmentation ..." << std::endl; |
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| 103 | FOR_EACH_LOC(Graph::EdgeIt, e, G) flow.set(e, 0); |
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| 104 | ts.reset(); |
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| 105 | int i=0; |
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[476] | 106 | while (max_flow_test.augmentOnBlockingFlow<MutableGraph>()) { ++i; } |
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[475] | 107 | std::cout << "elapsed time: " << ts << std::endl; |
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| 108 | std::cout << "number of augmentation phases: " << i << std::endl; |
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[476] | 109 | std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl; |
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[475] | 110 | } |
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| 111 | |
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| 112 | // { |
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| 113 | // std::cout << "faster physical blocking flow augmentation ..." << std::endl; |
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| 114 | // FOR_EACH_LOC(Graph::EdgeIt, e, G) flow.set(e, 0); |
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| 115 | // ts.reset(); |
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| 116 | // int i=0; |
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| 117 | // while (max_flow_test.augmentOnBlockingFlow1<MutableGraph>()) { ++i; } |
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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 | std::cout << "on-the-fly blocking flow augmentation ..." << std::endl; |
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| 125 | FOR_EACH_LOC(Graph::EdgeIt, e, G) flow.set(e, 0); |
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| 126 | ts.reset(); |
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| 127 | int i=0; |
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[476] | 128 | while (max_flow_test.augmentOnBlockingFlow2()) { ++i; } |
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[475] | 129 | std::cout << "elapsed time: " << ts << std::endl; |
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| 130 | std::cout << "number of augmentation phases: " << i << std::endl; |
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[476] | 131 | std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl; |
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[475] | 132 | } |
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| 133 | |
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| 134 | { |
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| 135 | std::cout << "on-the-fly shortest path augmentation ..." << std::endl; |
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| 136 | FOR_EACH_LOC(Graph::EdgeIt, e, G) flow.set(e, 0); |
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| 137 | ts.reset(); |
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| 138 | int i=0; |
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[476] | 139 | while (max_flow_test.augmentOnShortestPath()) { ++i; } |
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[475] | 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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[476] | 142 | std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl; |
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[475] | 143 | } |
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| 144 | |
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| 145 | |
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| 146 | return 0; |
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| 147 | } |
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