e n,
                 const GraphProperty& p = GraphProperty())
</pre>
  Creates a graph object with <tt>n</tt> vertices with the edges
  specified in the edge list given by the range <tt>[first, last)</tt>.
  The value type of the <tt>EdgeIterator</tt> must be a
  <tt>std::pair</tt>, where the type in the pair is an integer type. The
  integers will correspond to vertices, and they must all fall in the
  range of
  <tt>[0, n)</tt>. <br>
  (Required by <a href="IteratorConstructibleGraph.html">IteratorConst