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marci@174
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1 |
// -*- c++ -*-
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marci@174
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2 |
#include <iostream>
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marci@174
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3 |
#include <fstream>
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marci@174
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4 |
#include <string>
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marci@174
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5 |
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marci@642
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6 |
#include <sage_graph.h>
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marci@642
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#include <hugo/list_graph.h>
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marci@555
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8 |
#include <hugo/smart_graph.h>
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marci@555
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9 |
#include <hugo/dimacs.h>
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marci@762
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#include <hugo/max_flow.h>
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marci@762
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#include <augmenting_flow.h>
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marci@555
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12 |
#include <hugo/time_measure.h>
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marci@762
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#include <for_each_macros.h>
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marci@174
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marci@174
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15 |
using namespace hugo;
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marci@174
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16 |
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marci@174
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17 |
// Use a DIMACS max flow file as stdin.
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marci@174
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// read_dimacs_demo dimacs_max_flow_file
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marci@174
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marci@174
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int main(int, char** argv) {
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marci@174
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marci@174
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std::string in=argv[1];
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marci@642
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typedef SageGraph MutableGraph;
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marci@174
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24 |
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marci@174
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{
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marci@642
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typedef SageGraph Graph;
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marci@174
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typedef Graph::Node Node;
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marci@174
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typedef Graph::EdgeIt EdgeIt;
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marci@174
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29 |
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marci@577
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30 |
Graph g;
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marci@174
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31 |
Node s, t;
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marci@577
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32 |
Graph::EdgeMap<int> cap(g);
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marci@174
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33 |
std::ifstream ins(in.c_str());
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marci@577
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//readDimacsMaxFlow(ins, g, s, t, cap);
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marci@577
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readDimacs(ins, g, cap, s, t);
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marci@174
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36 |
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marci@334
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37 |
Timer ts;
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marci@577
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38 |
Graph::EdgeMap<int> flow(g); //0 flow
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marci@334
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39 |
MaxFlow<Graph, int, Graph::EdgeMap<int>, Graph::EdgeMap<int> >
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marci@577
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max_flow_test(g, s, t, cap, flow/*, true*/);
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marci@762
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AugmentingFlow<Graph, int, Graph::EdgeMap<int>, Graph::EdgeMap<int> >
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marci@762
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augmenting_flow_test(g, s, t, cap, flow/*, true*/);
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marci@334
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43 |
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marci@642
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std::cout << "SageGraph ..." << std::endl;
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marci@334
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45 |
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marci@174
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46 |
{
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marci@334
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std::cout << "preflow ..." << std::endl;
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marci@334
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48 |
ts.reset();
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marci@476
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49 |
max_flow_test.run();
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marci@334
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std::cout << "elapsed time: " << ts << std::endl;
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marci@476
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std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl;
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marci@334
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}
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marci@174
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53 |
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marci@334
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54 |
{
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marci@334
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std::cout << "physical blocking flow augmentation ..." << std::endl;
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marci@777
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for (Graph::EdgeIt e(g); e!=INVALID; ++e) flow.set(e, 0);
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marci@174
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ts.reset();
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marci@174
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int i=0;
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marci@762
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while (augmenting_flow_test.augmentOnBlockingFlow<MutableGraph>()) { ++i; }
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marci@174
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std::cout << "elapsed time: " << ts << std::endl;
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marci@174
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std::cout << "number of augmentation phases: " << i << std::endl;
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marci@762
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std::cout << "flow value: "<< augmenting_flow_test.flowValue() << std::endl;
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marci@174
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}
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marci@174
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marci@476
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// {
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marci@476
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// std::cout << "faster physical blocking flow augmentation ..." << std::endl;
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marci@577
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// FOR_EACH_LOC(Graph::EdgeIt, e, g) flow.set(e, 0);
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marci@476
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// ts.reset();
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marci@476
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// int i=0;
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marci@476
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// while (max_flow_test.augmentOnBlockingFlow1<MutableGraph>()) { ++i; }
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marci@476
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// std::cout << "elapsed time: " << ts << std::endl;
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marci@476
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// std::cout << "number of augmentation phases: " << i << std::endl;
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marci@476
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// std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl;
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marci@476
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// }
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marci@174
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marci@174
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{
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marci@334
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std::cout << "on-the-fly blocking flow augmentation ..." << std::endl;
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marci@777
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for (Graph::EdgeIt e(g); e!=INVALID; ++e) flow.set(e, 0);
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marci@334
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ts.reset();
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marci@334
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int i=0;
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marci@762
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while (augmenting_flow_test.augmentOnBlockingFlow2()) { ++i; }
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marci@334
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std::cout << "elapsed time: " << ts << std::endl;
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marci@334
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std::cout << "number of augmentation phases: " << i << std::endl;
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marci@762
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std::cout << "flow value: "<< augmenting_flow_test.flowValue() << std::endl;
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marci@334
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}
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marci@174
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86 |
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marci@334
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{
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marci@334
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std::cout << "on-the-fly shortest path augmentation ..." << std::endl;
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marci@777
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for (Graph::EdgeIt e(g); e!=INVALID; ++e) flow.set(e, 0);
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marci@174
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ts.reset();
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marci@174
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int i=0;
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marci@762
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while (augmenting_flow_test.augmentOnShortestPath()) { ++i; }
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marci@174
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std::cout << "elapsed time: " << ts << std::endl;
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marci@174
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std::cout << "number of augmentation phases: " << i << std::endl;
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marci@762
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std::cout << "flow value: "<< augmenting_flow_test.flowValue() << std::endl;
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marci@174
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}
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marci@174
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97 |
}
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marci@174
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marci@174
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99 |
{
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marci@174
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100 |
typedef SmartGraph Graph;
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marci@174
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typedef Graph::Node Node;
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marci@174
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102 |
typedef Graph::EdgeIt EdgeIt;
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marci@174
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103 |
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marci@577
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104 |
Graph g;
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marci@174
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105 |
Node s, t;
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marci@577
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106 |
Graph::EdgeMap<int> cap(g);
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marci@174
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107 |
std::ifstream ins(in.c_str());
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marci@577
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108 |
//readDimacsMaxFlow(ins, g, s, t, cap);
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marci@577
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109 |
readDimacs(ins, g, cap, s, t);
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marci@174
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110 |
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marci@334
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111 |
Timer ts;
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marci@577
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112 |
Graph::EdgeMap<int> flow(g); //0 flow
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marci@334
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113 |
MaxFlow<Graph, int, Graph::EdgeMap<int>, Graph::EdgeMap<int> >
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marci@577
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114 |
max_flow_test(g, s, t, cap, flow/*, true*/);
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marci@762
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115 |
AugmentingFlow<Graph, int, Graph::EdgeMap<int>, Graph::EdgeMap<int> >
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marci@762
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116 |
augmenting_flow_test(g, s, t, cap, flow/*, true*/);
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marci@476
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117 |
// MaxFlow<Graph, int, Graph::EdgeMap<int>, Graph::EdgeMap<int> >
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marci@577
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118 |
// max_flow_test(g, s, t, cap, flow);
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marci@334
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119 |
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marci@642
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120 |
std::cout << "SmartGraph ..." << std::endl;
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marci@334
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121 |
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marci@174
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122 |
{
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marci@334
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123 |
std::cout << "preflow ..." << std::endl;
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marci@777
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124 |
for (Graph::EdgeIt e(g); e!=INVALID; ++e) flow.set(e, 0);
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marci@334
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125 |
ts.reset();
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marci@476
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126 |
max_flow_test.run();
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marci@334
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127 |
std::cout << "elapsed time: " << ts << std::endl;
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marci@476
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128 |
std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl;
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marci@334
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129 |
}
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marci@174
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130 |
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marci@334
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131 |
{
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marci@334
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132 |
std::cout << "physical blocking flow augmentation ..." << std::endl;
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marci@777
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133 |
for (Graph::EdgeIt e(g); e!=INVALID; ++e) flow.set(e, 0);
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marci@174
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134 |
ts.reset();
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marci@174
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135 |
int i=0;
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marci@762
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136 |
while (augmenting_flow_test.augmentOnBlockingFlow<MutableGraph>()) { ++i; }
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marci@174
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137 |
std::cout << "elapsed time: " << ts << std::endl;
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marci@174
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138 |
std::cout << "number of augmentation phases: " << i << std::endl;
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marci@762
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139 |
std::cout << "flow value: "<< augmenting_flow_test.flowValue() << std::endl;
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marci@174
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140 |
}
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marci@174
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141 |
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marci@476
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142 |
// {
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marci@476
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143 |
// std::cout << "faster physical blocking flow augmentation ..." << std::endl;
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marci@577
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144 |
// FOR_EACH_LOC(Graph::EdgeIt, e, g) flow.set(e, 0);
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marci@476
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145 |
// ts.reset();
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marci@476
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146 |
// int i=0;
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marci@476
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147 |
// while (max_flow_test.augmentOnBlockingFlow1<MutableGraph>()) { ++i; }
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marci@476
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148 |
// std::cout << "elapsed time: " << ts << std::endl;
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marci@476
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149 |
// std::cout << "number of augmentation phases: " << i << std::endl;
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marci@476
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150 |
// std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl;
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marci@476
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151 |
// }
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marci@174
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152 |
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marci@174
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153 |
{
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marci@334
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154 |
std::cout << "on-the-fly blocking flow augmentation ..." << std::endl;
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marci@777
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155 |
for (Graph::EdgeIt e(g); e!=INVALID; ++e) flow.set(e, 0);
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marci@334
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156 |
ts.reset();
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marci@334
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157 |
int i=0;
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marci@762
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158 |
while (augmenting_flow_test.augmentOnBlockingFlow2()) { ++i; }
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marci@334
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159 |
std::cout << "elapsed time: " << ts << std::endl;
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marci@334
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160 |
std::cout << "number of augmentation phases: " << i << std::endl;
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marci@762
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161 |
std::cout << "flow value: "<< augmenting_flow_test.flowValue() << std::endl;
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marci@334
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162 |
}
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marci@174
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163 |
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marci@334
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164 |
{
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marci@334
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165 |
std::cout << "on-the-fly shortest path augmentation ..." << std::endl;
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marci@777
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166 |
for (Graph::EdgeIt e(g); e!=INVALID; ++e) flow.set(e, 0);
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marci@174
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167 |
ts.reset();
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marci@174
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168 |
int i=0;
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marci@762
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169 |
while (augmenting_flow_test.augmentOnShortestPath()) { ++i; }
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marci@174
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170 |
std::cout << "elapsed time: " << ts << std::endl;
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marci@174
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171 |
std::cout << "number of augmentation phases: " << i << std::endl;
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marci@762
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172 |
std::cout << "flow value: "<< augmenting_flow_test.flowValue() << std::endl;
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marci@174
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173 |
}
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marci@174
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174 |
}
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marci@174
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175 |
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marci@642
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176 |
{
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marci@642
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177 |
typedef ListGraph Graph;
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marci@642
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178 |
typedef Graph::Node Node;
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marci@642
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179 |
typedef Graph::EdgeIt EdgeIt;
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marci@642
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180 |
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marci@642
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181 |
Graph g;
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marci@642
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182 |
Node s, t;
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marci@642
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183 |
Graph::EdgeMap<int> cap(g);
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marci@642
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184 |
std::ifstream ins(in.c_str());
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marci@642
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185 |
//readDimacsMaxFlow(ins, g, s, t, cap);
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marci@642
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186 |
readDimacs(ins, g, cap, s, t);
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marci@642
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187 |
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marci@642
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188 |
Timer ts;
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marci@642
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189 |
Graph::EdgeMap<int> flow(g); //0 flow
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marci@642
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190 |
MaxFlow<Graph, int, Graph::EdgeMap<int>, Graph::EdgeMap<int> >
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marci@642
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191 |
max_flow_test(g, s, t, cap, flow/*, true*/);
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marci@762
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192 |
AugmentingFlow<Graph, int, Graph::EdgeMap<int>, Graph::EdgeMap<int> >
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marci@762
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193 |
augmenting_flow_test(g, s, t, cap, flow/*, true*/);
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marci@642
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194 |
// MaxFlow<Graph, int, Graph::EdgeMap<int>, Graph::EdgeMap<int> >
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marci@642
|
195 |
// max_flow_test(g, s, t, cap, flow);
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marci@642
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196 |
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marci@642
|
197 |
std::cout << "ListGraph ..." << std::endl;
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marci@642
|
198 |
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marci@642
|
199 |
{
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marci@642
|
200 |
std::cout << "preflow ..." << std::endl;
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marci@777
|
201 |
for (Graph::EdgeIt e(g); e!=INVALID; ++e) flow.set(e, 0);
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marci@642
|
202 |
ts.reset();
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marci@642
|
203 |
max_flow_test.run();
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marci@642
|
204 |
std::cout << "elapsed time: " << ts << std::endl;
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marci@642
|
205 |
std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl;
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marci@642
|
206 |
}
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marci@642
|
207 |
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marci@642
|
208 |
{
|
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marci@642
|
209 |
std::cout << "physical blocking flow augmentation ..." << std::endl;
|
|
marci@777
|
210 |
for (Graph::EdgeIt e(g); e!=INVALID; ++e) flow.set(e, 0);
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marci@642
|
211 |
ts.reset();
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marci@642
|
212 |
int i=0;
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marci@762
|
213 |
while (augmenting_flow_test.augmentOnBlockingFlow<MutableGraph>()) { ++i; }
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marci@642
|
214 |
std::cout << "elapsed time: " << ts << std::endl;
|
|
marci@642
|
215 |
std::cout << "number of augmentation phases: " << i << std::endl;
|
|
marci@762
|
216 |
std::cout << "flow value: "<< augmenting_flow_test.flowValue() << std::endl;
|
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marci@642
|
217 |
}
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marci@642
|
218 |
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marci@642
|
219 |
// {
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marci@642
|
220 |
// std::cout << "faster physical blocking flow augmentation ..." << std::endl;
|
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marci@642
|
221 |
// FOR_EACH_LOC(Graph::EdgeIt, e, g) flow.set(e, 0);
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marci@642
|
222 |
// ts.reset();
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marci@642
|
223 |
// int i=0;
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marci@642
|
224 |
// while (max_flow_test.augmentOnBlockingFlow1<MutableGraph>()) { ++i; }
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marci@642
|
225 |
// std::cout << "elapsed time: " << ts << std::endl;
|
|
marci@642
|
226 |
// std::cout << "number of augmentation phases: " << i << std::endl;
|
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marci@642
|
227 |
// std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl;
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marci@642
|
228 |
// }
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marci@642
|
229 |
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marci@642
|
230 |
{
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marci@642
|
231 |
std::cout << "on-the-fly blocking flow augmentation ..." << std::endl;
|
|
marci@777
|
232 |
for (Graph::EdgeIt e(g); e!=INVALID; ++e) flow.set(e, 0);
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marci@642
|
233 |
ts.reset();
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marci@642
|
234 |
int i=0;
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marci@762
|
235 |
while (augmenting_flow_test.augmentOnBlockingFlow2()) { ++i; }
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marci@642
|
236 |
std::cout << "elapsed time: " << ts << std::endl;
|
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marci@642
|
237 |
std::cout << "number of augmentation phases: " << i << std::endl;
|
|
marci@762
|
238 |
std::cout << "flow value: "<< augmenting_flow_test.flowValue() << std::endl;
|
|
marci@642
|
239 |
}
|
|
marci@642
|
240 |
|
|
marci@642
|
241 |
{
|
|
marci@642
|
242 |
std::cout << "on-the-fly shortest path augmentation ..." << std::endl;
|
|
marci@777
|
243 |
for (Graph::EdgeIt e(g); e!=INVALID; ++e) flow.set(e, 0);
|
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marci@642
|
244 |
ts.reset();
|
|
marci@642
|
245 |
int i=0;
|
|
marci@762
|
246 |
while (augmenting_flow_test.augmentOnShortestPath()) { ++i; }
|
|
marci@642
|
247 |
std::cout << "elapsed time: " << ts << std::endl;
|
|
marci@642
|
248 |
std::cout << "number of augmentation phases: " << i << std::endl;
|
|
marci@762
|
249 |
std::cout << "flow value: "<< augmenting_flow_test.flowValue() << std::endl;
|
|
marci@642
|
250 |
}
|
|
marci@642
|
251 |
}
|
|
marci@642
|
252 |
|
|
marci@174
|
253 |
return 0;
|
|
marci@174
|
254 |
}
|