1 | /* -*- mode: C++; indent-tabs-mode: nil; -*- |
---|
2 | * |
---|
3 | * This file is a part of LEMON, a generic C++ optimization library. |
---|
4 | * |
---|
5 | * Copyright (C) 2003-2010 |
---|
6 | * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
---|
7 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
---|
8 | * |
---|
9 | * Permission to use, modify and distribute this software is granted |
---|
10 | * provided that this copyright notice appears in all copies. For |
---|
11 | * precise terms see the accompanying LICENSE file. |
---|
12 | * |
---|
13 | * This software is provided "AS IS" with no warranty of any kind, |
---|
14 | * express or implied, and with no claim as to its suitability for any |
---|
15 | * purpose. |
---|
16 | * |
---|
17 | */ |
---|
18 | |
---|
19 | #include <sstream> |
---|
20 | |
---|
21 | #include <lemon/smart_graph.h> |
---|
22 | #include <lemon/adaptors.h> |
---|
23 | #include <lemon/concepts/graph.h> |
---|
24 | #include <lemon/concepts/maps.h> |
---|
25 | #include <lemon/lgf_reader.h> |
---|
26 | #include <lemon/nagamochi_ibaraki.h> |
---|
27 | |
---|
28 | #include "test_tools.h" |
---|
29 | |
---|
30 | using namespace lemon; |
---|
31 | using namespace std; |
---|
32 | |
---|
33 | const std::string lgf = |
---|
34 | "@nodes\n" |
---|
35 | "label\n" |
---|
36 | "0\n" |
---|
37 | "1\n" |
---|
38 | "2\n" |
---|
39 | "3\n" |
---|
40 | "4\n" |
---|
41 | "5\n" |
---|
42 | "@edges\n" |
---|
43 | " cap1 cap2 cap3\n" |
---|
44 | "0 1 1 1 1 \n" |
---|
45 | "0 2 2 2 4 \n" |
---|
46 | "1 2 4 4 4 \n" |
---|
47 | "3 4 1 1 1 \n" |
---|
48 | "3 5 2 2 4 \n" |
---|
49 | "4 5 4 4 4 \n" |
---|
50 | "2 3 1 6 6 \n"; |
---|
51 | |
---|
52 | void checkNagamochiIbarakiCompile() |
---|
53 | { |
---|
54 | typedef int Value; |
---|
55 | typedef concepts::Graph Graph; |
---|
56 | |
---|
57 | typedef Graph::Node Node; |
---|
58 | typedef Graph::Edge Edge; |
---|
59 | typedef concepts::ReadMap<Edge, Value> CapMap; |
---|
60 | typedef concepts::WriteMap<Node, bool> CutMap; |
---|
61 | |
---|
62 | Graph g; |
---|
63 | Node n; |
---|
64 | CapMap cap; |
---|
65 | CutMap cut; |
---|
66 | Value v; |
---|
67 | bool b; |
---|
68 | |
---|
69 | NagamochiIbaraki<Graph, CapMap> ni_test(g, cap); |
---|
70 | const NagamochiIbaraki<Graph, CapMap>& const_ni_test = ni_test; |
---|
71 | |
---|
72 | ni_test.init(); |
---|
73 | ni_test.start(); |
---|
74 | b = ni_test.processNextPhase(); |
---|
75 | ni_test.run(); |
---|
76 | |
---|
77 | v = const_ni_test.minCutValue(); |
---|
78 | v = const_ni_test.minCutMap(cut); |
---|
79 | } |
---|
80 | |
---|
81 | template <typename Graph, typename CapMap, typename CutMap> |
---|
82 | typename CapMap::Value |
---|
83 | cutValue(const Graph& graph, const CapMap& cap, const CutMap& cut) |
---|
84 | { |
---|
85 | typename CapMap::Value sum = 0; |
---|
86 | for (typename Graph::EdgeIt e(graph); e != INVALID; ++e) { |
---|
87 | if (cut[graph.u(e)] != cut[graph.v(e)]) { |
---|
88 | sum += cap[e]; |
---|
89 | } |
---|
90 | } |
---|
91 | return sum; |
---|
92 | } |
---|
93 | |
---|
94 | int main() { |
---|
95 | SmartGraph graph; |
---|
96 | SmartGraph::EdgeMap<int> cap1(graph), cap2(graph), cap3(graph); |
---|
97 | SmartGraph::NodeMap<bool> cut(graph); |
---|
98 | |
---|
99 | istringstream input(lgf); |
---|
100 | graphReader(graph, input) |
---|
101 | .edgeMap("cap1", cap1) |
---|
102 | .edgeMap("cap2", cap2) |
---|
103 | .edgeMap("cap3", cap3) |
---|
104 | .run(); |
---|
105 | |
---|
106 | { |
---|
107 | NagamochiIbaraki<SmartGraph> ni(graph, cap1); |
---|
108 | ni.run(); |
---|
109 | ni.minCutMap(cut); |
---|
110 | |
---|
111 | check(ni.minCutValue() == 1, "Wrong cut value"); |
---|
112 | check(ni.minCutValue() == cutValue(graph, cap1, cut), "Wrong cut value"); |
---|
113 | } |
---|
114 | { |
---|
115 | NagamochiIbaraki<SmartGraph> ni(graph, cap2); |
---|
116 | ni.run(); |
---|
117 | ni.minCutMap(cut); |
---|
118 | |
---|
119 | check(ni.minCutValue() == 3, "Wrong cut value"); |
---|
120 | check(ni.minCutValue() == cutValue(graph, cap2, cut), "Wrong cut value"); |
---|
121 | } |
---|
122 | { |
---|
123 | NagamochiIbaraki<SmartGraph> ni(graph, cap3); |
---|
124 | ni.run(); |
---|
125 | ni.minCutMap(cut); |
---|
126 | |
---|
127 | check(ni.minCutValue() == 5, "Wrong cut value"); |
---|
128 | check(ni.minCutValue() == cutValue(graph, cap3, cut), "Wrong cut value"); |
---|
129 | } |
---|
130 | { |
---|
131 | NagamochiIbaraki<SmartGraph>::SetUnitCapacity::Create ni(graph); |
---|
132 | ni.run(); |
---|
133 | ni.minCutMap(cut); |
---|
134 | |
---|
135 | ConstMap<SmartGraph::Edge, int> cap4(1); |
---|
136 | check(ni.minCutValue() == 1, "Wrong cut value"); |
---|
137 | check(ni.minCutValue() == cutValue(graph, cap4, cut), "Wrong cut value"); |
---|
138 | } |
---|
139 | |
---|
140 | return 0; |
---|
141 | } |
---|