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// Copyright 2012
// Authors: David Doria
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at

#include <boost/graph/directed_graph.hpp> // A subclass to provide reasonable arguments to adjacency_list for a typical directed graph

int main(int, char*[])
    // directed_graph is a subclass of adjacency_list which gives you object
    // oriented access to functions like add_vertex and add_edge, which makes
    // the code easier to understand. However, it hard codes many of the
    // template parameters, so it is much less flexible.

    typedef boost::directed_graph<> Graph;
    Graph g;
    boost::graph_traits< Graph >::vertex_descriptor v0 = g.add_vertex();
    boost::graph_traits< Graph >::vertex_descriptor v1 = g.add_vertex();

    g.add_edge(v0, v1);

    return 0;