Question: You are given a directed graph G=(V, E) and a subset of vertices V1 CV. Design an algorithm to decide if for every vertex v

You are given a directed graph G=(V, E) and a subset

You are given a directed graph G=(V, E) and a subset of vertices V1 CV. Design an algorithm to decide if for every vertex v EV\Vi there exists a vertex u V such that u can reach v in G and v can reach u in G. Your algorithm should run in O(VI+ |E|) time. Show the correctness and running time of your algorithm

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