2316. Count Unreachable Pairs of Nodes in an Undirected Graph

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You are given an integer n. There is an undirected graph with n nodes, numbered from 0 to n - 1. You are given a 2D integer array edges where edges[i] = [ai, bi] denotes that there exists an undirected edge connecting nodes ai and bi. Return the number of pairs of different nodes that are unreachable from each other. Example 1: Input: n = 3, edges = [[0,1],[0,2],[1,2]] Output: 0 Explanation:

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