Give a counterexample to the conjecture that if a directed graph G contains a path from u to , and if u d d in a depth first search of G, then is a descendant of u in the depth first forest produced

Question: Give a counterexample to the conjecture that if a directed graph G contains a path from u to , and if u.d < .d in

Give a counterexample to the conjecture that if a directed graph G contains a path from u to ν, and if u.d < ν.d in a depth-first search of G, then ν is a descendant of u in the depth-first forest produced.

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