#include<iostream.h>
#include<LINK/graph/DBinGraph.h>
#include<LINK/basic/Set.h>
#include<LINK/basic/Sequence.h>

main()
{
	DBinGraph g1;

	g1.addVertices(4);
    	Vertex** vertices = g1.vertexStart();
    	int num_vertices = g1.order();

	for (int i=1; i<num_vertices; i++) {
		Sequence<Vertex*> s;
		s.append(vertices[i]);
		s.append(vertices[i-1]);
		g1.addEdge(s);
	}
	cout << g1 << endl;
}