private void DFS(Digraph G, int s)
{
Marked[s] = true;
foreach (var item in G.Adj(s))
{
if (!Marked[item])
{
DFS(G, item);
}
}
}
private void DFS(Digraph G, int v)
{
Marked[v] = true;
id[v] = count;
foreach (var w in G.Adj(v))
{
if (!Marked[w])
{
DFS(G, w);
}
}
}