Changeset 372:e6a156fc186d in lemon-0.x for src/work/jacint/preflow.cc

Timestamp:

04/22/04 16:11:28 (20 years ago)

Author:

jacint

Branch:

default

Phase:

public

Convert:

svn:c9d7d8f5-90d6-0310-b91f-818b3a526b0e/lemon/trunk@502

Message:

 

File:

• src/work/jacint/preflow.cc (modified) (4 diffs)

src/work/jacint/preflow.cc

@@ -1 +1 @@
 #include <iostream>
-#include <fstream>
 
 #include <smart_graph.h>
 #include <list_graph.h>
 #include <dimacs.h>
-#include <preflow.h>
+#include <preflowproba.h>
 #include <time_measure.h>
 
 using namespace hugo;
 
-// Use a DIMACS max flow file as stdin.
-// read_dimacs_demo < dimacs_max_flow_file
 int main(int, char **) {
-  typedef SmartGraph::Node Node;
-  typedef SmartGraph::EdgeIt EdgeIt;
+ 
+  typedef SmartGraph Graph;
+  
+  typedef Graph::Node Node;
+  typedef Graph::EdgeIt EdgeIt;
 
-  SmartGraph G;
+  Graph G;
   Node s, t;
-  SmartGraph::EdgeMap<int> cap(G);
+  Graph::EdgeMap<int> cap(G);
   readDimacsMaxFlow(std::cin, G, s, t, cap);
-
+  Timer ts;
+  
   std::cout << "preflow demo ..." << std::endl;
   
-  double mintime=1000000;
-
-  for ( int i=1; i!=11; ++i ) {
-    SmartGraph::EdgeMap<int> flow(G);
-    double pre_time=currTime();
-    Preflow<SmartGraph, int> max_flow_test(G, s, t, cap, flow);
-    max_flow_test.run();
-    double post_time=currTime();
-    if ( mintime > post_time-pre_time ) mintime = post_time-pre_time;
-  }
-
-  SmartGraph::EdgeMap<int> flow(G);
-  Preflow<SmartGraph, int> max_flow_test(G, s, t, cap, flow);
+  Graph::EdgeMap<int> flow(G);
+  Preflow<Graph, int> max_flow_test(G, s, t, cap, flow, 1);
+  ts.reset();
   max_flow_test.run();
+  std::cout << "elapsed time: " << ts << std::endl;
   
-  SmartGraph::NodeMap<bool> cut(G);
+  Graph::NodeMap<bool> cut(G);
   max_flow_test.minCut(cut); 
   int min_cut_value=0;
@@ -46 +38 @@
   }
 
-  SmartGraph::NodeMap<bool> cut1(G);
+  Graph::NodeMap<bool> cut1(G);
   max_flow_test.minMinCut(cut1); 
   int min_min_cut_value=0;
@@ -54 +46 @@
   }
 
-  SmartGraph::NodeMap<bool> cut2(G);
+  Graph::NodeMap<bool> cut2(G);
   max_flow_test.maxMinCut(cut2); 
   int max_min_cut_value=0;
@@ -62 +54 @@
       }
   
-  std::cout << "min time of 10 runs: " << mintime << " sec"<< std::endl; 
   std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl;
   std::cout << "min cut value: "<< min_cut_value << std::endl;