1 | #include <iostream> |
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2 | #include <fstream> |
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3 | |
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4 | #include <list_graph.hh> |
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5 | #include <dimacs.hh> |
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6 | #include <edmonds_karp.hh> |
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7 | #include <time_measure.h> |
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8 | #include <graph_wrapper.h> |
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9 | |
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10 | using namespace hugo; |
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11 | |
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12 | // Use a DIMACS max flow file as stdin. |
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13 | // read_dimacs_demo < dimacs_max_flow_file |
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14 | |
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15 | /* |
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16 | struct Ize { |
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17 | }; |
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18 | |
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19 | struct Mize { |
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20 | Ize bumm; |
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21 | }; |
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22 | |
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23 | template <typename B> |
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24 | class Huha { |
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25 | public: |
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26 | int u; |
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27 | B brr; |
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28 | }; |
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29 | */ |
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30 | |
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31 | int main(int, char **) { |
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32 | typedef ListGraph::NodeIt NodeIt; |
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33 | typedef ListGraph::EachEdgeIt EachEdgeIt; |
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34 | |
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35 | /* |
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36 | Mize mize[10]; |
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37 | Mize bize[0]; |
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38 | Mize zize; |
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39 | typedef Mize Tize[0]; |
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40 | |
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41 | std::cout << &zize << " " << sizeof(mize) << sizeof(Tize) << std::endl; |
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42 | std::cout << sizeof(bize) << std::endl; |
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43 | |
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44 | |
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45 | Huha<Tize> k; |
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46 | std::cout << sizeof(k) << std::endl; |
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47 | |
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48 | |
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49 | struct Bumm { |
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50 | //int a; |
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51 | bool b; |
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52 | }; |
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53 | |
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54 | std::cout << sizeof(Bumm) << std::endl; |
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55 | */ |
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56 | |
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57 | ListGraph G; |
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58 | NodeIt s, t; |
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59 | ListGraph::EdgeMap<int> cap(G); |
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60 | readDimacsMaxFlow(std::cin, G, s, t, cap); |
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61 | /* |
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62 | typedef TrivGraphWrapper<ListGraph> TGW; |
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63 | TGW gw(G); |
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64 | TGW::EachNodeIt sw; |
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65 | gw.getFirst(sw); |
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66 | std::cout << "p1:" << gw.nodeNum() << std::endl; |
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67 | gw.erase(sw); |
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68 | std::cout << "p2:" << gw.nodeNum() << std::endl; |
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69 | |
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70 | typedef const ListGraph cLG; |
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71 | typedef TrivGraphWrapper<const cLG> CTGW; |
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72 | CTGW cgw(G); |
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73 | CTGW::EachNodeIt csw; |
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74 | cgw.getFirst(csw); |
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75 | std::cout << "p1:" << cgw.nodeNum() << std::endl; |
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76 | //cgw.erase(csw); |
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77 | std::cout << "p2:" << cgw.nodeNum() << std::endl; |
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78 | */ |
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79 | |
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80 | { |
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81 | std::cout << "edmonds karp demo (blocking flow augmentation)..." << std::endl; |
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82 | ListGraph::EdgeMap<int> flow(G); //0 flow |
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83 | |
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84 | Timer ts; |
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85 | ts.reset(); |
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86 | //double pre_time=currTime(); |
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87 | MaxFlow<ListGraph, int, ListGraph::EdgeMap<int>, ListGraph::EdgeMap<int> > max_flow_test(G, s, t, flow, cap); |
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88 | //max_flow_test.augmentWithBlockingFlow<ListGraph>(); |
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89 | int i=0; |
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90 | while (max_flow_test.augmentOnBlockingFlow<ListGraph>()) { ++i; } |
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91 | //double post_time=currTime(); |
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92 | |
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93 | //std::cout << "maximum flow: "<< std::endl; |
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94 | //for(EachEdgeIt e=G.first<EachEdgeIt>(); e.valid(); ++e) { |
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95 | // std::cout<<"("<<G.tail(e)<< "-"<<flow.get(e)<<"->"<<G.head(e)<<") "; |
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96 | //} |
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97 | //std::cout<<std::endl; |
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98 | std::cout << "elapsed time: " << ts << std::endl; |
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99 | std::cout << "number of augmentation phases: " << i << std::endl; |
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100 | std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl; |
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101 | } |
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102 | |
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103 | { |
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104 | std::cout << "edmonds karp demo (shortest path augmentation)..." << std::endl; |
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105 | ListGraph::EdgeMap<int> flow(G); //0 flow |
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106 | |
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107 | Timer ts; |
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108 | ts.reset(); |
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109 | //double pre_time=currTime(); |
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110 | MaxFlow<ListGraph, int, ListGraph::EdgeMap<int>, ListGraph::EdgeMap<int> > max_flow_test(G, s, t, flow, cap); |
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111 | //max_flow_test.augmentWithBlockingFlow<ListGraph>(); |
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112 | int i=0; |
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113 | while (max_flow_test.augmentOnShortestPath()) { ++i; } |
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114 | //double post_time=currTime(); |
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115 | |
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116 | //std::cout << "maximum flow: "<< std::endl; |
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117 | //for(EachEdgeIt e=G.first<EachEdgeIt>(); e.valid(); ++e) { |
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118 | // std::cout<<"("<<G.tail(e)<< "-"<<flow.get(e)<<"->"<<G.head(e)<<") "; |
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119 | //} |
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120 | //std::cout<<std::endl; |
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121 | std::cout << "elapsed time: " << ts << std::endl; |
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122 | std::cout << "number of augmentation phases: " << i << std::endl; |
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123 | std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl; |
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124 | } |
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125 | |
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126 | return 0; |
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127 | } |
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