#include <iostream>

template<class Graph_t, class EdgeProperty>
struct EdgePrinter
{
        typedef Graph_t Graph;
        
        EdgePrinter( Graph& g )
                : graph(g)
        {}      
                
protected:

        Graph& graph;        
};

template<class Graph, class V, class E>
struct GraphPrinter: public EdgePrinter<Graph,E>
{
        GraphPrinter( Graph& g )
          : EdgePrinter<Graph,E>(g)
        {}
        
        const GraphPrinter& operator () ( std::ostream& out ) const
        {
            std::cout << this->graph << "\n";
        }
};

int main()
{
}