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 | #include <lemon/random.h> |
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20 | |
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21 | |
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22 | template <typename UGraph, typename CapacityMap> |
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23 | void genNoiUGraph(UGraph& g, CapacityMap& c, |
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24 | int n, int d, int k, int p) { |
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25 | std::vector<typename UGraph::Node> nodes(n); |
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26 | for (int i = 0; i < n; ++i) { |
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27 | nodes[i] = g.addNode(); |
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28 | } |
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29 | typename UGraph::template NodeMap<int> comp(g); |
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30 | for (int i = 0; i < n; ++i) { |
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31 | comp[nodes[i]] = rnd[k]; |
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32 | } |
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33 | int m = (n * (n - 1) * d) / 200; |
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34 | for (int i = 0; i < m; ++i) { |
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35 | int s = rnd[n], t = rnd[n]; |
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36 | c[g.addEdge(nodes[s], nodes[t])] = |
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37 | rnd[(comp[nodes[s]] == comp[nodes[t]] ? p : 1) * 100]; |
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38 | } |
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39 | } |
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40 | |
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41 | template <typename UGraph, typename CapacityMap> |
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42 | void genBikeWheelUGraph(UGraph& g, CapacityMap& c, int n) { |
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43 | std::vector<typename UGraph::Node> nodes(n); |
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44 | for (int i = 0; i < n; ++i) { |
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45 | nodes[i] = g.addNode(); |
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46 | } |
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47 | for (int i = 0; i < n - 2; ++i) { |
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48 | c[g.addEdge(nodes[i], nodes[n - 1 - (i % 2)])] = 2; |
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49 | } |
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50 | for (int i = 1; i < n - 2; ++i) { |
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51 | c[g.addEdge(nodes[i - 1], nodes[i])] = n - 1; |
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52 | } |
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53 | c[g.addEdge(nodes[n - 3], nodes[0])] = n - 1; |
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54 | c[g.addEdge(nodes[n - 2], nodes[n - 1])] = 2; |
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55 | } |
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56 | |
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57 | template <typename UGraph, typename CapacityMap> |
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58 | void genRegUGraph(UGraph& g, CapacityMap& c, int n, int d) { |
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59 | std::vector<typename UGraph::Node> nodes(n); |
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60 | for (int i = 0; i < n; ++i) { |
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61 | nodes[i] = g.addNode(); |
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62 | } |
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63 | for (int k = 0; k < d; ++k) { |
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64 | for (int i = 0; i < n; ++i) { |
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65 | int r = rnd[n]; |
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66 | typename UGraph::Node t = nodes[r]; |
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67 | nodes[r] = nodes[i]; |
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68 | nodes[i] = t; |
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69 | } |
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70 | for (int i = 1; i < n; ++i) { |
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71 | c[g.addEdge(nodes[i - 1], nodes[i])] = 1; |
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72 | } |
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73 | c[g.addEdge(nodes[n - 1], nodes[0])] = 1; |
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74 | } |
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75 | } |
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76 | |
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77 | template <typename UGraph, typename CapacityMap> |
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78 | void genCdgUGraph(UGraph& g, CapacityMap& c, int n, int d) { |
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79 | std::vector<typename UGraph::Node> nodes(n); |
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80 | for (int i = 0; i < n; ++i) { |
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81 | nodes[i] = g.addNode(); |
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82 | } |
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83 | std::vector<typename UGraph::Node> mix(n * d); |
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84 | for (int i = 0; i < n; ++i) { |
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85 | for (int j = 0; j < d; ++j) { |
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86 | mix[i * d + j] = nodes[i]; |
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87 | } |
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88 | } |
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89 | while (mix.size() >= 2) { |
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90 | int r; |
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91 | r = rnd[mix.size()]; |
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92 | typename UGraph::Node s = mix[r]; |
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93 | mix[r] = mix.back(); mix.pop_back(); |
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94 | r = rnd[mix.size()]; |
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95 | typename UGraph::Node t = mix[r]; |
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96 | mix[r] = mix.back(); mix.pop_back(); |
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97 | c[g.addEdge(s, t)] = 1; |
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98 | } |
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99 | } |
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