Question: Give an O(V + E)-time algorithm to remove all the cycles in a directed graph G = (V;E). Removing a cycle means removing an edge

Give an O(V + E)-time algorithm to remove all the cycles in a directed graph G = (V;E). Removing a cycle means removing an edge of the cycle. If there are k cycles in G, the algorithm should only remove O(k) edges. You should try to make your algorithms as ecient as possible.

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