Hello Codeforces!!
I saw this problem days ago and I have tried to solve it since then but I have not been successful. Help me please
This is the problem
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Auto comment: topic has been updated by Kanata18 (previous revision, new revision, compare).
simply maintain an ordered set of nodes in current path while doing dfs and use find_by_order
I already tried and got MLE
You are probably passing something by value
Thank you very much, I already have an idea how to get AC