COIN-OR::LEMON - Graph Library

source: lemon-0.x/src/work/alpar/f_ed_ka_demo.cc @ 464:7932f53d413d

Last change on this file since 464:7932f53d413d was 118:38e16c594a4f, checked in by Alpar Juttner, 18 years ago

Improvements in 'Timer'/'TimeStamp?'

File size: 1.3 KB
RevLine 
[74]1#include <iostream>
2#include <fstream>
3
[103]4#include "smart_graph.h"
5
[74]6#include "../list_graph.hh"
7#include "../marci/dimacs.hh"
8#include "f_ed_ka.h"
9#include "../marci/time_measure.h"
10
[108]11using namespace hugo;
[74]12
13// Use a DIMACS max flow file as stdin.
14// read_dimacs_demo < dimacs_max_flow_file
15
16int main(int, char **) {
[108]17  typedef SmartGraph Graph;
18  //typedef ListGraph Graph;
[74]19
[103]20  typedef Graph::NodeIt NodeIt;
21  typedef Graph::EachNodeIt EachNodeIt;
22  typedef Graph::EachEdgeIt EachEdgeIt;
23
24  Graph G;
[95]25  NodeIt s, t;
[118]26  Timer ts;
[108]27  Graph::DynEdgeMap<int> cap(G);
[74]28  readDimacsMaxFlow(std::cin, G, s, t, cap);
29
[118]30  std::cout << "loading time: " << ts << std::endl;
31  ts.reset();
[74]32  std::cout << "edmonds karp demo..." << std::endl;
[108]33  Graph::DynEdgeMap<int> flow(G); //0 flow
[74]34 
35  int ret;
[118]36  //  double pre_time=currTime();
[117]37 
[74]38  ret = maxFlow(G,flow,cap,s,t);
[118]39  //  double post_time=currTime();
40  std::cout << "running time: " << ts << std::endl;
[117]41
[74]42  //std::cout << "maximum flow: "<< std::endl;
43  //for(EachEdgeIt e=G.first<EachEdgeIt>(); e.valid(); ++e) {
44  //  std::cout<<"("<<G.tail(e)<< "-"<<flow.get(e)<<"->"<<G.head(e)<<") ";
45  //}
46  //std::cout<<std::endl;
[118]47  //  std::cout<<"elapsed time: " << post_time-pre_time << " sec"<< std::endl;
[74]48  std::cout << "flow value: "<< ret << std::endl;
49
50  return 0;
51}
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