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In explanation 0, 1 and 3 are connected by both forward as well as back edge thus violating "any two distinct vertices, u and v, are connected by at most one edge (u, v)."
Am I missing something here?
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DFS Edges
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In explanation 0, 1 and 3 are connected by both forward as well as back edge thus violating "any two distinct vertices, u and v, are connected by at most one edge (u, v)."
Am I missing something here?