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Can you provide a test case for which my code is failing?
Question: https://codeforces.net/contest/1702/problem/E Submission: https://codeforces.net/contest/1702/submission/266327665
So first i've checked if the frequencies of all elmenents is exactly two. Second check: If node 1 is connected to node 2 and 3. Then node 2 and 3 cannot be connected. If this is true for all nodes, return yes. Otherwise output No. Idk why this is failing.
