// Use a DIMACS max flow file as stdin.

 // const_map_time < dimacs_max_flow_file

 #include <iostream>

 #include <lemon/maps.h>

 #include <lemon/smart_graph.h>

 #include <lemon/time_measure.h>

 #include <lemon/dimacs.h>

 #include <lemon/graph_wrapper.h>

 using namespace lemon;

 int main() {

   typedef SmartGraph Graph;

   typedef Graph::Node Node;

   typedef Graph::Edge Edge;

   typedef Graph::EdgeIt EdgeIt;

   Graph g;

   Node s, t;

   NullMap<Edge, int> cap;

   readDimacs(std::cin, g, cap, s, t);

   //typedef ConstMap<Node, Bool<true> > CN1; CN1 cn1;

   typedef ConstMap<Node, True> CN1; CN1 cn1;

   typedef ConstMap<Node, bool> CN2; CN2 cn2(true);

   // typedef ConstMap<Edge, Bool<true> > CE1; CE1 ce1;

   typedef ConstMap<Edge, True> CE1; CE1 ce1;

   typedef ConstMap<Edge, bool> CE2; CE2 ce2(true);

   typedef SubGraphWrapper<Graph, CN1, CE1> SB1; SB1 sb1(g, cn1, ce1);

   typedef SubGraphWrapper<Graph, CN2, CE2> SB2; SB2 sb2(g, cn2, ce2);

   Timer ts;

   cout << "specialized (compile-time) const map time:" << endl;

   ts.reset();

   for (SB1::NodeIt n(sb1); n!=INVALID; ++n)

     for (SB1::EdgeIt e(sb1); e!=INVALID; ++e) { }

   cout << ts << endl;

   ts.reset();

   cout << "generic const map time:" << endl;

   for (SB2::NodeIt n(sb2); n!=INVALID; ++n) 

     for (SB2::EdgeIt e(sb2); e!=INVALID; ++e) { }

   cout << ts << endl;

   return 0;

 }