[174] | 1 | // -*- c++ -*- |
---|
| 2 | #include <iostream> |
---|
| 3 | #include <fstream> |
---|
| 4 | #include <string> |
---|
| 5 | |
---|
| 6 | #include <list_graph.h> |
---|
[555] | 7 | #include <hugo/smart_graph.h> |
---|
| 8 | #include <hugo/dimacs.h> |
---|
[480] | 9 | #include <max_flow.h> |
---|
[555] | 10 | #include <hugo/time_measure.h> |
---|
[334] | 11 | #include <for_each_macros.h> |
---|
[174] | 12 | |
---|
| 13 | using namespace hugo; |
---|
| 14 | |
---|
| 15 | // Use a DIMACS max flow file as stdin. |
---|
| 16 | // read_dimacs_demo dimacs_max_flow_file |
---|
| 17 | |
---|
| 18 | int main(int, char** argv) { |
---|
| 19 | |
---|
| 20 | std::string in=argv[1]; |
---|
| 21 | typedef ListGraph MutableGraph; |
---|
| 22 | |
---|
| 23 | { |
---|
| 24 | typedef ListGraph Graph; |
---|
| 25 | typedef Graph::Node Node; |
---|
| 26 | typedef Graph::EdgeIt EdgeIt; |
---|
| 27 | |
---|
| 28 | Graph G; |
---|
| 29 | Node s, t; |
---|
| 30 | Graph::EdgeMap<int> cap(G); |
---|
| 31 | std::ifstream ins(in.c_str()); |
---|
| 32 | readDimacsMaxFlow(ins, G, s, t, cap); |
---|
| 33 | |
---|
[334] | 34 | Timer ts; |
---|
| 35 | Graph::EdgeMap<int> flow(G); //0 flow |
---|
| 36 | MaxFlow<Graph, int, Graph::EdgeMap<int>, Graph::EdgeMap<int> > |
---|
[476] | 37 | max_flow_test(G, s, t, cap, flow/*, true*/); |
---|
[334] | 38 | |
---|
| 39 | std::cout << "ListGraph ..." << std::endl; |
---|
| 40 | |
---|
[174] | 41 | { |
---|
[334] | 42 | std::cout << "preflow ..." << std::endl; |
---|
| 43 | ts.reset(); |
---|
[476] | 44 | max_flow_test.run(); |
---|
[334] | 45 | std::cout << "elapsed time: " << ts << std::endl; |
---|
[476] | 46 | std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl; |
---|
[334] | 47 | } |
---|
[174] | 48 | |
---|
[334] | 49 | { |
---|
| 50 | std::cout << "physical blocking flow augmentation ..." << std::endl; |
---|
| 51 | FOR_EACH_LOC(Graph::EdgeIt, e, G) flow.set(e, 0); |
---|
[174] | 52 | ts.reset(); |
---|
| 53 | int i=0; |
---|
| 54 | while (max_flow_test.augmentOnBlockingFlow<MutableGraph>()) { ++i; } |
---|
| 55 | std::cout << "elapsed time: " << ts << std::endl; |
---|
| 56 | std::cout << "number of augmentation phases: " << i << std::endl; |
---|
| 57 | std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl; |
---|
| 58 | } |
---|
| 59 | |
---|
[476] | 60 | // { |
---|
| 61 | // std::cout << "faster physical blocking flow augmentation ..." << std::endl; |
---|
| 62 | // FOR_EACH_LOC(Graph::EdgeIt, e, G) flow.set(e, 0); |
---|
| 63 | // ts.reset(); |
---|
| 64 | // int i=0; |
---|
| 65 | // while (max_flow_test.augmentOnBlockingFlow1<MutableGraph>()) { ++i; } |
---|
| 66 | // std::cout << "elapsed time: " << ts << std::endl; |
---|
| 67 | // std::cout << "number of augmentation phases: " << i << std::endl; |
---|
| 68 | // std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl; |
---|
| 69 | // } |
---|
[174] | 70 | |
---|
| 71 | { |
---|
[334] | 72 | std::cout << "on-the-fly blocking flow augmentation ..." << std::endl; |
---|
| 73 | FOR_EACH_LOC(Graph::EdgeIt, e, G) flow.set(e, 0); |
---|
| 74 | ts.reset(); |
---|
| 75 | int i=0; |
---|
| 76 | while (max_flow_test.augmentOnBlockingFlow2()) { ++i; } |
---|
| 77 | std::cout << "elapsed time: " << ts << std::endl; |
---|
| 78 | std::cout << "number of augmentation phases: " << i << std::endl; |
---|
| 79 | std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl; |
---|
| 80 | } |
---|
[174] | 81 | |
---|
[334] | 82 | { |
---|
| 83 | std::cout << "on-the-fly shortest path augmentation ..." << std::endl; |
---|
| 84 | FOR_EACH_LOC(Graph::EdgeIt, e, G) flow.set(e, 0); |
---|
[174] | 85 | ts.reset(); |
---|
| 86 | int i=0; |
---|
| 87 | while (max_flow_test.augmentOnShortestPath()) { ++i; } |
---|
| 88 | std::cout << "elapsed time: " << ts << std::endl; |
---|
| 89 | std::cout << "number of augmentation phases: " << i << std::endl; |
---|
| 90 | std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl; |
---|
| 91 | } |
---|
| 92 | } |
---|
| 93 | |
---|
| 94 | |
---|
| 95 | { |
---|
| 96 | typedef SmartGraph Graph; |
---|
| 97 | typedef Graph::Node Node; |
---|
| 98 | typedef Graph::EdgeIt EdgeIt; |
---|
| 99 | |
---|
| 100 | Graph G; |
---|
| 101 | Node s, t; |
---|
| 102 | Graph::EdgeMap<int> cap(G); |
---|
| 103 | std::ifstream ins(in.c_str()); |
---|
| 104 | readDimacsMaxFlow(ins, G, s, t, cap); |
---|
| 105 | |
---|
[334] | 106 | Timer ts; |
---|
| 107 | Graph::EdgeMap<int> flow(G); //0 flow |
---|
| 108 | MaxFlow<Graph, int, Graph::EdgeMap<int>, Graph::EdgeMap<int> > |
---|
[476] | 109 | max_flow_test(G, s, t, cap, flow/*, true*/); |
---|
| 110 | // MaxFlow<Graph, int, Graph::EdgeMap<int>, Graph::EdgeMap<int> > |
---|
| 111 | // max_flow_test(G, s, t, cap, flow); |
---|
[334] | 112 | |
---|
| 113 | std::cout << "SmatrGraph ..." << std::endl; |
---|
| 114 | |
---|
[174] | 115 | { |
---|
[334] | 116 | std::cout << "preflow ..." << std::endl; |
---|
| 117 | FOR_EACH_LOC(Graph::EdgeIt, e, G) flow.set(e, 0); |
---|
| 118 | ts.reset(); |
---|
[476] | 119 | max_flow_test.run(); |
---|
[334] | 120 | std::cout << "elapsed time: " << ts << std::endl; |
---|
[476] | 121 | std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl; |
---|
[334] | 122 | } |
---|
[174] | 123 | |
---|
[334] | 124 | { |
---|
| 125 | std::cout << "physical blocking flow augmentation ..." << std::endl; |
---|
| 126 | FOR_EACH_LOC(Graph::EdgeIt, e, G) flow.set(e, 0); |
---|
[174] | 127 | ts.reset(); |
---|
| 128 | int i=0; |
---|
| 129 | while (max_flow_test.augmentOnBlockingFlow<MutableGraph>()) { ++i; } |
---|
| 130 | std::cout << "elapsed time: " << ts << std::endl; |
---|
| 131 | std::cout << "number of augmentation phases: " << i << std::endl; |
---|
| 132 | std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl; |
---|
| 133 | } |
---|
| 134 | |
---|
[476] | 135 | // { |
---|
| 136 | // std::cout << "faster physical blocking flow augmentation ..." << std::endl; |
---|
| 137 | // FOR_EACH_LOC(Graph::EdgeIt, e, G) flow.set(e, 0); |
---|
| 138 | // ts.reset(); |
---|
| 139 | // int i=0; |
---|
| 140 | // while (max_flow_test.augmentOnBlockingFlow1<MutableGraph>()) { ++i; } |
---|
| 141 | // std::cout << "elapsed time: " << ts << std::endl; |
---|
| 142 | // std::cout << "number of augmentation phases: " << i << std::endl; |
---|
| 143 | // std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl; |
---|
| 144 | // } |
---|
[174] | 145 | |
---|
| 146 | { |
---|
[334] | 147 | std::cout << "on-the-fly blocking flow augmentation ..." << std::endl; |
---|
| 148 | FOR_EACH_LOC(Graph::EdgeIt, e, G) flow.set(e, 0); |
---|
| 149 | ts.reset(); |
---|
| 150 | int i=0; |
---|
| 151 | while (max_flow_test.augmentOnBlockingFlow2()) { ++i; } |
---|
| 152 | std::cout << "elapsed time: " << ts << std::endl; |
---|
| 153 | std::cout << "number of augmentation phases: " << i << std::endl; |
---|
| 154 | std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl; |
---|
| 155 | } |
---|
[174] | 156 | |
---|
[334] | 157 | { |
---|
| 158 | std::cout << "on-the-fly shortest path augmentation ..." << std::endl; |
---|
| 159 | FOR_EACH_LOC(Graph::EdgeIt, e, G) flow.set(e, 0); |
---|
[174] | 160 | ts.reset(); |
---|
| 161 | int i=0; |
---|
| 162 | while (max_flow_test.augmentOnShortestPath()) { ++i; } |
---|
| 163 | std::cout << "elapsed time: " << ts << std::endl; |
---|
| 164 | std::cout << "number of augmentation phases: " << i << std::endl; |
---|
| 165 | std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl; |
---|
| 166 | } |
---|
| 167 | } |
---|
| 168 | |
---|
[334] | 169 | |
---|
| 170 | |
---|
| 171 | |
---|
[174] | 172 | return 0; |
---|
| 173 | } |
---|