1 | /* -*- C++ -*- |
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2 | * test/min_cost_flow_test.cc - Part of LEMON, a generic C++ optimization library |
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3 | * |
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4 | * Copyright (C) 2005 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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5 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
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6 | * |
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7 | * Permission to use, modify and distribute this software is granted |
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8 | * provided that this copyright notice appears in all copies. For |
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9 | * precise terms see the accompanying LICENSE file. |
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10 | * |
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11 | * This software is provided "AS IS" with no warranty of any kind, |
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12 | * express or implied, and with no claim as to its suitability for any |
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13 | * purpose. |
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14 | * |
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15 | */ |
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16 | |
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17 | #include <iostream> |
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18 | #include "test_tools.h" |
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19 | #include <lemon/list_graph.h> |
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20 | #include <lemon/min_cost_flow.h> |
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21 | //#include <path.h> |
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22 | //#include <maps.h> |
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23 | |
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24 | using namespace lemon; |
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25 | |
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26 | |
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27 | bool passed = true; |
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28 | /* |
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29 | void check(bool rc, char *msg="") { |
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30 | passed = passed && rc; |
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31 | if(!rc) { |
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32 | std::cerr << "Test failed! ("<< msg << ")" << std::endl; \ |
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33 | |
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34 | |
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35 | } |
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36 | } |
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37 | */ |
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38 | |
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39 | |
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40 | int main() |
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41 | { |
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42 | typedef ListGraph Graph; |
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43 | typedef Graph::Node Node; |
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44 | typedef Graph::Edge Edge; |
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45 | |
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46 | Graph graph; |
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47 | |
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48 | //Ahuja könyv példája |
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49 | |
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50 | Node s=graph.addNode(); |
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51 | Node v1=graph.addNode(); |
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52 | Node v2=graph.addNode(); |
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53 | Node v3=graph.addNode(); |
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54 | Node v4=graph.addNode(); |
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55 | Node v5=graph.addNode(); |
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56 | Node t=graph.addNode(); |
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57 | |
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58 | Edge s_v1=graph.addEdge(s, v1); |
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59 | Edge v1_v2=graph.addEdge(v1, v2); |
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60 | Edge s_v3=graph.addEdge(s, v3); |
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61 | Edge v2_v4=graph.addEdge(v2, v4); |
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62 | Edge v2_v5=graph.addEdge(v2, v5); |
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63 | Edge v3_v5=graph.addEdge(v3, v5); |
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64 | Edge v4_t=graph.addEdge(v4, t); |
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65 | Edge v5_t=graph.addEdge(v5, t); |
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66 | |
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67 | |
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68 | Graph::EdgeMap<int> length(graph); |
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69 | |
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70 | length.set(s_v1, 6); |
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71 | length.set(v1_v2, 4); |
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72 | length.set(s_v3, 10); |
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73 | length.set(v2_v4, 5); |
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74 | length.set(v2_v5, 1); |
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75 | length.set(v3_v5, 4); |
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76 | length.set(v4_t, 8); |
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77 | length.set(v5_t, 8); |
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78 | |
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79 | Graph::EdgeMap<int> capacity(graph); |
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80 | |
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81 | capacity.set(s_v1, 2); |
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82 | capacity.set(v1_v2, 2); |
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83 | capacity.set(s_v3, 1); |
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84 | capacity.set(v2_v4, 1); |
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85 | capacity.set(v2_v5, 1); |
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86 | capacity.set(v3_v5, 1); |
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87 | capacity.set(v4_t, 1); |
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88 | capacity.set(v5_t, 2); |
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89 | |
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90 | // ConstMap<Edge, int> const1map(1); |
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91 | std::cout << "Mincostflows algorithm test..." << std::endl; |
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92 | |
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93 | MinCostFlow< Graph, Graph::EdgeMap<int>, Graph::EdgeMap<int> > |
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94 | surb_test(graph, length, capacity, s, t); |
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95 | |
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96 | int k=1; |
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97 | |
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98 | surb_test.augment(); |
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99 | check( surb_test.flowValue() == 1 && surb_test.totalLength() == 19,"One path, total length should be 19"); |
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100 | |
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101 | check( surb_test.run(k) == 1 && surb_test.totalLength() == 19,"One path, total length should be 19"); |
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102 | |
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103 | check(surb_test.checkComplementarySlackness(), "Is the primal-dual solution pair really optimal?"); |
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104 | |
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105 | k=2; |
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106 | |
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107 | check( surb_test.run(k) == 2 && surb_test.totalLength() == 41,"Two paths, total length should be 41"); |
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108 | |
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109 | check(surb_test.checkComplementarySlackness(), "Is the primal-dual solution pair really optimal?"); |
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110 | |
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111 | surb_test.augment(); |
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112 | surb_test.augment(); |
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113 | surb_test.augment(); |
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114 | k=4; |
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115 | |
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116 | check( surb_test.run(k) == 3 && surb_test.totalLength() == 64,"Three paths, total length should be 64"); |
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117 | |
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118 | check(surb_test.checkComplementarySlackness(), "Is the primal-dual solution pair really optimal?"); |
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119 | |
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120 | |
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121 | std::cout << (passed ? "All tests passed." : "Some of the tests failed!!!") |
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122 | << std::endl; |
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123 | |
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124 | return passed ? 0 : 1; |
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125 | |
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126 | } |
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