Given a Directed Graph with V vertices and E edges, Find the number of strongly connected components in the graph.
Input: Output: 3 Explanation: We can clearly see that there are 3 Strongly Connected Components in the Graph
Input: Output: 1 Explanation: All of the nodes are connected to each other. So, there's only one SCC.
You don't need to read input or print anything. Your task is to complete the function kosaraju() which takes the number of vertices V and adjacency list of the graph as inputs and returns an integer denoting the number of strongly connected components in the given graph.
Expected Time Complexity: O(V+E).
Expected Auxiliary Space: O(V).
1 ≤ V ≤ 5000
0 ≤ E ≤ (V*(V-1))
0 ≤ u, v ≤ N-1
Sum of E over all testcases will not exceed 25*106
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