r423:ff48c2738fb2
Mon, 08 Dec 2008 16:18:04
[Not Reviewed]
0 comments (0 inline)
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@@ -13,25 +13,60 @@ |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
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* express or implied, and with no claim as to its suitability for any |
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* purpose. |
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* |
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*/ |
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|
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#include <fstream> |
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#include <string> |
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#include <iostream> |
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|
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#include "test_tools.h" |
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#include <lemon/smart_graph.h> |
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#include <lemon/preflow.h> |
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#include <lemon/concepts/digraph.h> |
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#include <lemon/concepts/maps.h> |
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#include <lemon/lgf_reader.h> |
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#include <lemon/elevator.h> |
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|
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using namespace lemon; |
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char test_lgf[] = |
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"@nodes\n" |
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"label\n" |
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"0\n" |
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"1\n" |
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"2\n" |
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"3\n" |
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"4\n" |
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"5\n" |
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"6\n" |
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"7\n" |
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"8\n" |
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"9\n" |
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"@arcs\n" |
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" label capacity\n" |
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"0 1 0 20\n" |
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"0 2 1 0\n" |
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"1 1 2 3\n" |
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"1 2 3 8\n" |
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"1 3 4 8\n" |
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"2 5 5 5\n" |
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"3 2 6 5\n" |
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"3 5 7 5\n" |
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"3 6 8 5\n" |
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"4 3 9 3\n" |
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"5 7 10 3\n" |
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"5 6 11 10\n" |
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"5 8 12 10\n" |
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"6 8 13 8\n" |
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"8 9 14 20\n" |
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"8 1 15 5\n" |
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"9 5 16 5\n" |
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"@attributes\n" |
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"source 1\n" |
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"target 8\n"; |
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|
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void checkPreflowCompile() |
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{
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typedef int VType; |
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typedef concepts::Digraph Digraph; |
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typedef Digraph::Node Node; |
| ... | ... |
@@ -120,26 +155,17 @@ |
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typedef Digraph::ArcMap<int> CapMap; |
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typedef Digraph::ArcMap<int> FlowMap; |
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typedef Digraph::NodeMap<bool> CutMap; |
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|
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typedef Preflow<Digraph, CapMap> PType; |
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std::string f_name; |
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if( getenv("srcdir") )
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f_name = std::string(getenv("srcdir"));
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else f_name = "."; |
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f_name += "/test/preflow_graph.lgf"; |
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std::ifstream file(f_name.c_str()); |
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check(file, "Input file '" << f_name << "' not found."); |
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Digraph g; |
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Node s, t; |
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CapMap cap(g); |
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std::istringstream input(test_lgf); |
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DigraphReader<Digraph>(g,input). |
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arcMap("capacity", cap).
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node("source",s).
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node("target",t).
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run(); |
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PType preflow_test(g, cap, s, t); |
| ... | ... |
@@ -14,23 +14,65 @@ |
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* express or implied, and with no claim as to its suitability for any |
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* purpose. |
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* |
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*/ |
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|
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#include <iostream> |
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#include <fstream> |
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|
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#include <lemon/list_graph.h> |
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#include <lemon/lgf_reader.h> |
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#include <lemon/path.h> |
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#include <lemon/suurballe.h> |
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#include "test_tools.h" |
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|
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using namespace lemon; |
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char test_lgf[] = |
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"@nodes\n" |
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"label supply1 supply2 supply3\n" |
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"1 0 20 27\n" |
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"2 0 -4 0\n" |
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"3 0 0 0\n" |
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"4 0 0 0\n" |
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"5 0 9 0\n" |
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"6 0 -6 0\n" |
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"7 0 0 0\n" |
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"8 0 0 0\n" |
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"9 0 3 0\n" |
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"10 0 -2 0\n" |
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"11 0 0 0\n" |
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"12 0 -20 -27\n" |
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"@arcs\n" |
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" cost capacity lower1 lower2\n" |
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" 1 2 70 11 0 8\n" |
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" 1 3 150 3 0 1\n" |
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" 1 4 80 15 0 2\n" |
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" 2 8 80 12 0 0\n" |
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" 3 5 140 5 0 3\n" |
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" 4 6 60 10 0 1\n" |
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" 4 7 80 2 0 0\n" |
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" 4 8 110 3 0 0\n" |
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" 5 7 60 14 0 0\n" |
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" 5 11 120 12 0 0\n" |
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" 6 3 0 3 0 0\n" |
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" 6 9 140 4 0 0\n" |
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" 6 10 90 8 0 0\n" |
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" 7 1 30 5 0 0\n" |
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" 8 12 60 16 0 4\n" |
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" 9 12 50 6 0 0\n" |
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"10 12 70 13 0 5\n" |
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"10 2 100 7 0 0\n" |
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"10 7 60 10 0 0\n" |
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"11 10 20 14 0 6\n" |
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"12 11 30 10 0 0\n" |
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"@attributes\n" |
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"source 1\n" |
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"target 12\n" |
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"@end\n"; |
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|
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// Check the feasibility of the flow |
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template <typename Digraph, typename FlowMap> |
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bool checkFlow( const Digraph& gr, const FlowMap& flow, |
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typename Digraph::Node s, typename Digraph::Node t, |
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int value ) |
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{
|
| ... | ... |
@@ -93,26 +135,18 @@ |
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// Read the test digraph |
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ListDigraph digraph; |
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ListDigraph::ArcMap<int> length(digraph); |
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Node source, target; |
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std::string fname; |
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if(getenv("srcdir"))
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fname = std::string(getenv("srcdir"));
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else fname = "."; |
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fname += "/test/min_cost_flow_test.lgf"; |
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std::ifstream input(fname.c_str()); |
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check(input, "Input file '" << fname << "' not found"); |
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std::istringstream input(test_lgf); |
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DigraphReader<ListDigraph>(digraph, input). |
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arcMap("cost", length).
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node("source", source).
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node("target", target).
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run(); |
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input.close(); |
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// Find 2 paths |
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{
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Suurballe<ListDigraph> suurballe(digraph, length, source, target); |
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check(suurballe.run(2) == 2, "Wrong number of paths"); |
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check(checkFlow(digraph, suurballe.flowMap(), source, target, 2), |
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@nodes |
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label supply1 supply2 supply3 |
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1 0 20 27 |
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2 0 -4 0 |
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3 0 0 0 |
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4 0 0 0 |
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5 0 9 0 |
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6 0 -6 0 |
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7 0 0 0 |
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8 0 0 0 |
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9 0 3 0 |
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10 0 -2 0 |
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11 0 0 0 |
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12 0 -20 -27 |
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@arcs |
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cost capacity lower1 lower2 |
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1 2 70 11 0 8 |
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1 3 150 3 0 1 |
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1 4 80 15 0 2 |
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2 8 80 12 0 0 |
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3 5 140 5 0 3 |
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4 6 60 10 0 1 |
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4 7 80 2 0 0 |
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4 8 110 3 0 0 |
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5 7 60 14 0 0 |
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5 11 120 12 0 0 |
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6 3 0 3 0 0 |
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6 9 140 4 0 0 |
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6 10 90 8 0 0 |
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7 1 30 5 0 0 |
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8 12 60 16 0 4 |
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9 12 50 6 0 0 |
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10 12 70 13 0 5 |
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10 2 100 7 0 0 |
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10 7 60 10 0 0 |
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11 10 20 14 0 6 |
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12 11 30 10 0 0 |
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@attributes |
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source 1 |
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target 12 |
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@end |
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@nodes |
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label |
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0 |
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1 |
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2 |
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3 |
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4 |
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5 |
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6 |
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7 |
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8 |
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9 |
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@arcs |
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label capacity |
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0 1 0 20 |
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0 2 1 0 |
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1 1 2 3 |
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1 2 3 8 |
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1 3 4 8 |
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2 5 5 5 |
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3 2 6 5 |
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3 5 7 5 |
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3 6 8 5 |
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4 3 9 3 |
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5 7 10 3 |
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5 6 11 10 |
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5 8 12 10 |
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6 8 13 8 |
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8 9 14 20 |
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8 1 15 5 |
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9 5 16 5 |
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@attributes |
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source 1 |
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target 8 |
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