static Graph makeGraph()
{
Graph g = new Graph(10);
g.AddEdgeDirected(0, 1);
g.AddEdgeDirected(0, 3);
g.AddEdgeDirected(1, 2);
g.AddEdgeDirected(1, 5);
g.AddEdgeDirected(2, 8);
g.AddEdgeDirected(3, 2);
g.AddEdgeDirected(3, 4);
g.AddEdgeDirected(4, 9);
g.AddEdgeDirected(5, 8);
g.AddEdgeDirected(6, 7);
g.AddEdgeDirected(8, 6);
g.AddEdgeDirected(9, 8);
return(g);
}