protected void Relax(IDirectedEdge e)
{
int v = e.From, w = e.To;
if (DistTo(w) > DistTo(v) + e.Weight)
{
distTo[w] = distTo[v] + e.Weight;
edgeTo[w] = e;
}
}
public void AddEdge(IDirectedEdge e)
{
adj[e.From].Add(e);
E++;
}
