src/work/jacint/dijkstra.cc
author marci
Fri, 23 Apr 2004 07:41:48 +0000
changeset 379 a5bff2813c4d
parent 258 94bafec4f56f
permissions -rw-r--r--
.
     1 #include <iostream>
     2 #include <fstream>
     3 
     4 #include <list_graph.hh>
     5 #include <dimacs.hh>
     6 #include <dijkstra.h>
     7 #include <time_measure.h>
     8 #include <bin_heap.hh>
     9 
    10 using namespace hugo;
    11 
    12 int main(int, char **) {
    13   
    14   typedef ListGraph Graph;
    15 
    16   typedef Graph::Node Node;
    17   typedef Graph::EdgeIt EdgeIt;
    18 
    19   Graph G;
    20   Node s, t;
    21   Graph::EdgeMap<int> cap(G);
    22   readDimacsMaxFlow(std::cin, G, s, t, cap);
    23   Timer ts;
    24   
    25   std::cout << "Testing dijkstra.h with Fibonacci-heap 
    26 implementation fib_heap.h ..." << std::endl;
    27   
    28   Dijkstra<Graph, int
    29       //      , BinHeap<ListGraph::NodeIt, int, ListGraph::NodeMap<int> > 
    30 > dijkstra_test(G, s, cap);
    31    ts.reset();
    32     dijkstra_test.run();
    33     std::cout << "elapsed time: " << ts << std::endl;
    34   double post_time=currTime();
    35     
    36   std::cout << "running time: " << post_time-pre_time << " sec"<< std::endl; 
    37  
    38   EachEdgeIt e;
    39 
    40   int hiba=0;
    41 
    42   int edge=0;
    43 
    44   for ( G.getFirst(e) ; G.valid(e); G.next(e) ) {
    45     NodeIt u=G.tail(e);
    46     NodeIt v=G.head(e);
    47     ++edge;
    48     if ( dijkstra_test.dist(v) - dijkstra_test.dist(u) > cap.get(e) ) {
    49       std::cout<<"Hiba: "<<edge<<": "<<dijkstra_test.dist(v) - dijkstra_test.dist(u) - cap.get(e)<<std::endl;
    50       ++hiba;
    51     }
    52   }
    53 
    54   std::cout << "Osszhibas el: " << hiba << " osszel: " << G.edgeNum() << std::endl;
    55 
    56   return 0;
    57 }