1 | /* -*- C++ -*- |
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2 | * |
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3 | * This file is a part of LEMON, a generic C++ optimization library |
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4 | * |
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5 | * Copyright (C) 2003-2007 |
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6 | * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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7 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
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8 | * |
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9 | * Permission to use, modify and distribute this software is granted |
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10 | * provided that this copyright notice appears in all copies. For |
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11 | * precise terms see the accompanying LICENSE file. |
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12 | * |
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13 | * This software is provided "AS IS" with no warranty of any kind, |
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14 | * express or implied, and with no claim as to its suitability for any |
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15 | * purpose. |
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16 | * |
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17 | */ |
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18 | |
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19 | #ifndef LEMON_TEST_GRAPH_TEST_H |
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20 | #define LEMON_TEST_GRAPH_TEST_H |
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21 | |
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22 | //#include <lemon/graph_utils.h> |
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23 | #include "test_tools.h" |
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24 | |
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25 | //! \ingroup misc |
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26 | //! \file |
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27 | //! \brief Some utility and test cases to test digraph classes. |
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28 | namespace lemon { |
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29 | |
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30 | ///Structure returned by \ref addPetersen(). |
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31 | |
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32 | ///Structure returned by \ref addPetersen(). |
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33 | /// |
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34 | template<class Digraph> |
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35 | struct PetStruct |
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36 | { |
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37 | ///Vector containing the outer nodes. |
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38 | std::vector<typename Digraph::Node> outer; |
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39 | ///Vector containing the inner nodes. |
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40 | std::vector<typename Digraph::Node> inner; |
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41 | ///Vector containing the edges of the inner circle. |
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42 | std::vector<typename Digraph::Arc> incir; |
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43 | ///Vector containing the edges of the outer circle. |
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44 | std::vector<typename Digraph::Arc> outcir; |
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45 | ///Vector containing the chord edges. |
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46 | std::vector<typename Digraph::Arc> chords; |
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47 | }; |
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48 | |
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49 | |
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50 | |
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51 | ///Adds a Petersen graph to \c G. |
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52 | |
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53 | ///Adds a Petersen graph to \c G. |
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54 | ///\return The nodes and edges of the generated graph. |
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55 | |
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56 | template<typename Digraph> |
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57 | PetStruct<Digraph> addPetersen(Digraph &G,int num = 5) |
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58 | { |
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59 | PetStruct<Digraph> n; |
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60 | |
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61 | for(int i=0;i<num;i++) { |
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62 | n.outer.push_back(G.addNode()); |
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63 | n.inner.push_back(G.addNode()); |
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64 | } |
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65 | |
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66 | for(int i=0;i<num;i++) { |
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67 | n.chords.push_back(G.addArc(n.outer[i],n.inner[i])); |
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68 | n.outcir.push_back(G.addArc(n.outer[i],n.outer[(i+1) % num])); |
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69 | n.incir.push_back(G.addArc(n.inner[i],n.inner[(i+2) % num])); |
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70 | } |
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71 | return n; |
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72 | } |
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73 | |
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74 | /// \brief Adds to the digraph the reverse pair of all edges. |
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75 | /// |
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76 | /// Adds to the digraph the reverse pair of all edges. |
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77 | /// |
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78 | template<class Digraph> |
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79 | void bidirDigraph(Digraph &G) |
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80 | { |
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81 | typedef typename Digraph::Arc Arc; |
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82 | typedef typename Digraph::ArcIt ArcIt; |
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83 | |
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84 | std::vector<Arc> ee; |
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85 | |
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86 | for(ArcIt e(G);e!=INVALID;++e) ee.push_back(e); |
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87 | |
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88 | for(typename std::vector<Arc>::iterator p=ee.begin();p!=ee.end();p++) |
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89 | G.addArc(G.target(*p),G.source(*p)); |
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90 | } |
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91 | |
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92 | |
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93 | /// \brief Checks the bidirectioned Petersen graph. |
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94 | /// |
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95 | /// Checks the bidirectioned Petersen graph. |
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96 | /// |
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97 | template<class Digraph> |
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98 | void checkBidirPetersen(Digraph &G, int num = 5) |
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99 | { |
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100 | typedef typename Digraph::Node Node; |
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101 | |
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102 | typedef typename Digraph::ArcIt ArcIt; |
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103 | typedef typename Digraph::NodeIt NodeIt; |
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104 | |
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105 | checkDigraphNodeList(G, 2 * num); |
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106 | checkDigraphArcList(G, 6 * num); |
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107 | |
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108 | for(NodeIt n(G);n!=INVALID;++n) { |
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109 | checkDigraphInArcList(G, n, 3); |
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110 | checkDigraphOutArcList(G, n, 3); |
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111 | } |
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112 | } |
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113 | |
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114 | template<class Digraph> void checkDigraphNodeList(Digraph &G, int nn) |
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115 | { |
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116 | typename Digraph::NodeIt n(G); |
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117 | for(int i=0;i<nn;i++) { |
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118 | check(n!=INVALID,"Wrong Node list linking."); |
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119 | ++n; |
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120 | } |
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121 | check(n==INVALID,"Wrong Node list linking."); |
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122 | } |
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123 | |
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124 | template<class Digraph> |
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125 | void checkDigraphArcList(Digraph &G, int nn) |
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126 | { |
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127 | typedef typename Digraph::ArcIt ArcIt; |
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128 | |
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129 | ArcIt e(G); |
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130 | for(int i=0;i<nn;i++) { |
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131 | check(e!=INVALID,"Wrong Arc list linking."); |
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132 | ++e; |
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133 | } |
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134 | check(e==INVALID,"Wrong Arc list linking."); |
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135 | } |
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136 | |
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137 | template<class Digraph> |
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138 | void checkDigraphOutArcList(Digraph &G, typename Digraph::Node n, int nn) |
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139 | { |
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140 | typename Digraph::OutArcIt e(G,n); |
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141 | for(int i=0;i<nn;i++) { |
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142 | check(e!=INVALID,"Wrong OutArc list linking."); |
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143 | check(n==G.source(e), "Wrong OutArc list linking."); |
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144 | ++e; |
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145 | } |
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146 | check(e==INVALID,"Wrong OutArc list linking."); |
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147 | } |
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148 | |
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149 | template<class Digraph> void |
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150 | checkDigraphInArcList(Digraph &G, typename Digraph::Node n, int nn) |
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151 | { |
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152 | typename Digraph::InArcIt e(G,n); |
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153 | for(int i=0;i<nn;i++) { |
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154 | check(e!=INVALID,"Wrong InArc list linking."); |
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155 | check(n==G.target(e), "Wrong InArc list linking."); |
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156 | ++e; |
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157 | } |
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158 | check(e==INVALID,"Wrong InArc list linking."); |
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159 | } |
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160 | |
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161 | template <class Digraph> |
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162 | void checkDigraph() { |
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163 | const int num = 5; |
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164 | Digraph G; |
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165 | addPetersen(G, num); |
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166 | bidirDigraph(G); |
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167 | checkBidirPetersen(G, num); |
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168 | } |
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169 | |
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170 | template <class Digraph> |
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171 | void checkDigraphIterators(const Digraph& digraph) { |
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172 | typedef typename Digraph::Node Node; |
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173 | typedef typename Digraph::NodeIt NodeIt; |
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174 | typedef typename Digraph::Arc Arc; |
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175 | typedef typename Digraph::ArcIt ArcIt; |
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176 | typedef typename Digraph::InArcIt InArcIt; |
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177 | typedef typename Digraph::OutArcIt OutArcIt; |
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178 | // typedef ConArcIt<Digraph> ConArcIt; |
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179 | } |
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180 | |
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181 | ///\file |
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182 | ///\todo Check target(), source() as well; |
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183 | |
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184 | |
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185 | } //namespace lemon |
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186 | |
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187 | |
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188 | #endif |
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