src/work/jacint/preflow.cc
changeset 211 9222a9b8b323
parent 113 cf7b01232d86
child 220 7deda4d6a07a
     1.1 --- a/src/work/jacint/preflow.cc	Fri Mar 19 21:15:14 2004 +0000
     1.2 +++ b/src/work/jacint/preflow.cc	Fri Mar 19 22:16:05 2004 +0000
     1.3 @@ -1,8 +1,8 @@
     1.4  #include <iostream>
     1.5  #include <fstream>
     1.6  
     1.7 -#include <list_graph.hh>
     1.8 -#include <dimacs.hh>
     1.9 +#include <list_graph.h>
    1.10 +#include <dimacs.h>
    1.11  #include <preflow.h>
    1.12  #include <time_measure.h>
    1.13  
    1.14 @@ -11,11 +11,11 @@
    1.15  // Use a DIMACS max flow file as stdin.
    1.16  // read_dimacs_demo < dimacs_max_flow_file
    1.17  int main(int, char **) {
    1.18 -  typedef ListGraph::NodeIt NodeIt;
    1.19 -  typedef ListGraph::EachEdgeIt EachEdgeIt;
    1.20 +  typedef ListGraph::Node Node;
    1.21 +  typedef ListGraph::EdgeIt EdgeIt;
    1.22  
    1.23    ListGraph G;
    1.24 -  NodeIt s, t;
    1.25 +  Node s, t;
    1.26    ListGraph::EdgeMap<int> cap(G);
    1.27    readDimacsMaxFlow(std::cin, G, s, t, cap);
    1.28  
    1.29 @@ -24,27 +24,30 @@
    1.30    double mintime=1000000;
    1.31  
    1.32    for ( int i=1; i!=11; ++i ) {
    1.33 +    ListGraph::EdgeMap<int> flow(G);
    1.34      double pre_time=currTime();
    1.35 -    preflow<ListGraph, int> max_flow_test(G, s, t, cap);
    1.36 +    Preflow<ListGraph, int> max_flow_test(G, s, t, cap, flow);
    1.37 +    max_flow_test.run();
    1.38      double post_time=currTime();
    1.39      if ( mintime > post_time-pre_time ) mintime = post_time-pre_time;
    1.40    }
    1.41  
    1.42 -  double pre_time=currTime();
    1.43 -    preflow<ListGraph, int> max_flow_test(G, s, t, cap);
    1.44 -  double post_time=currTime();
    1.45 -    
    1.46 +  ListGraph::EdgeMap<int> flow(G);
    1.47 +  Preflow<ListGraph, int> max_flow_test(G, s, t, cap, flow);
    1.48 +  max_flow_test.run();
    1.49 +  
    1.50    ListGraph::NodeMap<bool> cut(G);
    1.51    max_flow_test.minCut(cut); 
    1.52    int min_cut_value=0;
    1.53 -  for(EachEdgeIt e=G.first<EachEdgeIt>(); e.valid(); ++e) {
    1.54 +  EdgeIt e;
    1.55 +  for(G.first(e); G.valid(e); G.next(e)) {
    1.56      if (cut.get(G.tail(e)) && !cut.get(G.head(e))) min_cut_value+=cap.get(e);
    1.57    }
    1.58  
    1.59    ListGraph::NodeMap<bool> cut1(G);
    1.60    max_flow_test.minMinCut(cut1); 
    1.61    int min_min_cut_value=0;
    1.62 -  for(EachEdgeIt e=G.first<EachEdgeIt>(); e.valid(); ++e) {
    1.63 +  for(G.first(e); G.valid(e); G.next(e)) {
    1.64      if (cut.get(G.tail(e)) && !cut.get(G.head(e))) 
    1.65        min_min_cut_value+=cap.get(e);
    1.66    }
    1.67 @@ -52,17 +55,13 @@
    1.68    ListGraph::NodeMap<bool> cut2(G);
    1.69    max_flow_test.maxMinCut(cut2); 
    1.70    int max_min_cut_value=0;
    1.71 -  for(EachEdgeIt e=G.first<EachEdgeIt>(); e.valid(); ++e) {
    1.72 +  for(G.first(e); G.valid(e); G.next(e)) {
    1.73      if (cut2.get(G.tail(e)) && !cut2.get(G.head(e))) 
    1.74        max_min_cut_value+=cap.get(e);
    1.75        }
    1.76    
    1.77    std::cout << "min time of 10 runs: " << mintime << " sec"<< std::endl; 
    1.78 -  std::cout << "phase 0: " << max_flow_test.time-pre_time 
    1.79 -	    << " sec"<< std::endl; 
    1.80 -  std::cout << "phase 1: " << post_time-max_flow_test.time 
    1.81 -	    << " sec"<< std::endl; 
    1.82 -  std::cout << "flow value: "<< max_flow_test.maxFlow() << std::endl;
    1.83 +  std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl;
    1.84    std::cout << "min cut value: "<< min_cut_value << std::endl;
    1.85    std::cout << "min min cut value: "<< min_min_cut_value << std::endl;
    1.86    std::cout << "max min cut value: "<< max_min_cut_value <<