#include <iostream>

#include <lemon/list_graph.h>

int main()

{

  typedef lemon::ListGraph Graph;

  typedef Graph::EdgeIt EdgeIt;

  typedef Graph::NodeIt NodeIt;

  using lemon::INVALID;

  Graph g;

  for (int i = 0; i < 3; i++)

    g.addNode();

  for (NodeIt i(g); i!=INVALID; ++i)

    for (NodeIt j(g); j!=INVALID; ++j)

      if (i != j) g.addEdge(i, j);

  std::cout << "Hello World!" << std::endl;

  std::cout <<  std::endl;

  std::cout << "This is library LEMON here! We have a graph!" << std::endl;

  std::cout <<  std::endl;

  std::cout << "Nodes:";

  for (NodeIt i(g); i!=INVALID; ++i)

    std::cout << " " << g.id(i);

  std::cout << std::endl;

  std::cout << "Edges:";

  for (EdgeIt i(g); i!=INVALID; ++i)

    std::cout << " (" << g.id(g.source(i)) << "," << g.id(g.target(i)) << ")";

  std::cout << std::endl;

}