src/work/jacint/prim.cc
author ladanyi
Fri, 28 May 2004 07:48:16 +0000
changeset 666 410a1419e86b
parent 220 7deda4d6a07a
child 921 818510fa3d99
permissions -rw-r--r--
Added a short tutorial on using graphs.
     1 #include <iostream>
     2 #include <fstream>
     3 
     4 #include <smart_graph.h>
     5 #include <list_graph.h>
     6 #include <dimacs.h>
     7 #include <prim.h>
     8 #include <time_measure.h>
     9 
    10 #include <bin_heap.h>
    11 #include <fib_heap.h>
    12 
    13 using namespace hugo;
    14 
    15 int main(int, char **) {
    16   typedef SmartGraph::Node Node;
    17 
    18   SmartGraph G;
    19   Node s, t;
    20   SmartGraph::EdgeMap<int> cap(G);
    21   readDimacsMaxFlow(std::cin, G, s, t, cap);
    22 
    23   std::cout << "prim demo ..." << std::endl;
    24   
    25   double pre_time=currTime();
    26     Prim<SmartGraph, int, FibHeap<SmartGraph::Node, int, 
    27     SmartGraph::NodeMap<int> > > prim_test(G, cap);
    28     prim_test.run();
    29   double post_time=currTime();
    30     
    31   std::cout << "running time with fib_heap: " 
    32 	    << post_time-pre_time << " sec"<< std::endl; 
    33  
    34   pre_time=currTime();
    35   Prim<SmartGraph, int, BinHeap<SmartGraph::Node, int, 
    36     SmartGraph::NodeMap<int> > > prim_test2(G, cap);
    37   prim_test2.run();
    38   post_time=currTime();
    39   
    40   std::cout << "running time with bin_heap: " 
    41 	    << post_time-pre_time << " sec"<< std::endl; 
    42   
    43   std::cout<<"A minimalis feszitofa sulya fib kupaccal: "<< prim_test.weight() <<std::endl;
    44   std::cout<<"A minimalis feszitofa sulya bin kupaccal: "<< prim_test2.weight() <<std::endl;
    45   if ( prim_test.weight() != prim_test2.weight() ) 
    46     std::cout<<"Nem egyezik meg!"<<std::endl; 
    47   else std::cout<<"Megegyezik."<<std::endl; 
    48 
    49   return 0;
    50 }