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) 2003-2008 |
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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 | #include <iostream> |
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20 | #include <fstream> |
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21 | #include <string> |
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22 | #include <vector> |
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23 | |
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24 | #include <lemon/concept_check.h> |
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25 | #include <lemon/concepts/heap.h> |
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26 | |
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27 | #include <lemon/smart_graph.h> |
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28 | |
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29 | #include <lemon/lgf_reader.h> |
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30 | #include <lemon/dijkstra.h> |
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31 | #include <lemon/maps.h> |
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32 | |
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33 | #include <lemon/bin_heap.h> |
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34 | |
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35 | #include "test_tools.h" |
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36 | |
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37 | using namespace lemon; |
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38 | using namespace lemon::concepts; |
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39 | |
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40 | typedef ListDigraph Digraph; |
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41 | DIGRAPH_TYPEDEFS(Digraph); |
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42 | |
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43 | char test_lgf[] = |
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44 | "@nodes\n" |
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45 | "label\n" |
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46 | "0\n" |
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47 | "1\n" |
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48 | "2\n" |
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49 | "3\n" |
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50 | "4\n" |
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51 | "5\n" |
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52 | "6\n" |
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53 | "7\n" |
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54 | "8\n" |
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55 | "9\n" |
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56 | "@arcs\n" |
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57 | " label capacity\n" |
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58 | "0 5 0 94\n" |
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59 | "3 9 1 11\n" |
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60 | "8 7 2 83\n" |
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61 | "1 2 3 94\n" |
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62 | "5 7 4 35\n" |
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63 | "7 4 5 84\n" |
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64 | "9 5 6 38\n" |
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65 | "0 4 7 96\n" |
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66 | "6 7 8 6\n" |
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67 | "3 1 9 27\n" |
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68 | "5 2 10 77\n" |
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69 | "5 6 11 69\n" |
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70 | "6 5 12 41\n" |
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71 | "4 6 13 70\n" |
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72 | "3 2 14 45\n" |
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73 | "7 9 15 93\n" |
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74 | "5 9 16 50\n" |
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75 | "9 0 17 94\n" |
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76 | "9 6 18 67\n" |
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77 | "0 9 19 86\n" |
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78 | "@attributes\n" |
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79 | "source 3\n"; |
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80 | |
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81 | int test_seq[] = { 2, 28, 19, 27, 33, 25, 13, 41, 10, 26, 1, 9, 4, 34}; |
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82 | int test_inc[] = {20, 28, 34, 16, 0, 46, 44, 0, 42, 32, 14, 8, 6, 37}; |
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83 | |
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84 | int test_len = sizeof(test_seq) / sizeof(test_seq[0]); |
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85 | |
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86 | template <typename Heap> |
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87 | void heapSortTest() { |
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88 | RangeMap<int> map(test_len, -1); |
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89 | |
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90 | Heap heap(map); |
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91 | |
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92 | std::vector<int> v(test_len); |
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93 | |
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94 | for (int i = 0; i < test_len; ++i) { |
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95 | v[i] = test_seq[i]; |
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96 | heap.push(i, v[i]); |
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97 | } |
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98 | std::sort(v.begin(), v.end()); |
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99 | for (int i = 0; i < test_len; ++i) { |
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100 | check(v[i] == heap.prio() ,"Wrong order in heap sort."); |
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101 | heap.pop(); |
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102 | } |
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103 | } |
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104 | |
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105 | template <typename Heap> |
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106 | void heapIncreaseTest() { |
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107 | RangeMap<int> map(test_len, -1); |
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108 | |
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109 | Heap heap(map); |
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110 | |
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111 | std::vector<int> v(test_len); |
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112 | |
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113 | for (int i = 0; i < test_len; ++i) { |
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114 | v[i] = test_seq[i]; |
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115 | heap.push(i, v[i]); |
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116 | } |
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117 | for (int i = 0; i < test_len; ++i) { |
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118 | v[i] += test_inc[i]; |
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119 | heap.increase(i, v[i]); |
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120 | } |
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121 | std::sort(v.begin(), v.end()); |
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122 | for (int i = 0; i < test_len; ++i) { |
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123 | check(v[i] == heap.prio() ,"Wrong order in heap increase test."); |
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124 | heap.pop(); |
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125 | } |
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126 | } |
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127 | |
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128 | |
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129 | |
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130 | template <typename Heap> |
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131 | void dijkstraHeapTest(const Digraph& digraph, const IntArcMap& length, |
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132 | Node source) { |
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133 | |
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134 | typename Dijkstra<Digraph, IntArcMap>::template DefStandardHeap<Heap>:: |
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135 | Create dijkstra(digraph, length); |
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136 | |
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137 | dijkstra.run(source); |
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138 | |
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139 | for(ArcIt a(digraph); a != INVALID; ++a) { |
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140 | Node s = digraph.source(a); |
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141 | Node t = digraph.target(a); |
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142 | if (dijkstra.reached(s)) { |
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143 | check( dijkstra.dist(t) - dijkstra.dist(s) <= length[a], |
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144 | "Error in a shortest path tree!"); |
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145 | } |
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146 | } |
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147 | |
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148 | for(NodeIt n(digraph); n != INVALID; ++n) { |
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149 | if ( dijkstra.reached(n) && dijkstra.predArc(n) != INVALID ) { |
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150 | Arc a = dijkstra.predArc(n); |
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151 | Node s = digraph.source(a); |
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152 | check( dijkstra.dist(n) - dijkstra.dist(s) == length[a], |
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153 | "Error in a shortest path tree!"); |
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154 | } |
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155 | } |
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156 | |
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157 | } |
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158 | |
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159 | int main() { |
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160 | |
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161 | typedef int Item; |
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162 | typedef int Prio; |
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163 | typedef RangeMap<int> ItemIntMap; |
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164 | |
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165 | Digraph digraph; |
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166 | IntArcMap length(digraph); |
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167 | Node source; |
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168 | |
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169 | std::istringstream input(test_lgf); |
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170 | digraphReader(input, digraph). |
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171 | arcMap("capacity", length). |
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172 | node("source", source). |
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173 | run(); |
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174 | |
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175 | { |
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176 | typedef BinHeap<Prio, ItemIntMap> IntHeap; |
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177 | checkConcept<Heap<Prio, ItemIntMap>, IntHeap>(); |
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178 | heapSortTest<IntHeap>(); |
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179 | heapIncreaseTest<IntHeap>(); |
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180 | |
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181 | typedef BinHeap<Prio, IntNodeMap > NodeHeap; |
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182 | checkConcept<Heap<Prio, IntNodeMap >, NodeHeap>(); |
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183 | dijkstraHeapTest<NodeHeap>(digraph, length, source); |
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184 | } |
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185 | |
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186 | return 0; |
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187 | } |
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