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FUNCPC
Автор Mnesy, история, 2 года назад, По-английски

Hello guys, I found out that Problem H at ICPC 2021 (which was yesterday) is not an original problem which sounds very weird, i wonder how such an event does not have its own original problems.

ICPC problem set: https://icpc.global/worldfinals/problems/icpc2021.pdf (problem H)

The original problem: https://codeforces.net/gym/101341/problem/A

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The idea is not new at all (problem from year 2009). It's the first appearance of exactly this problem that I know, but as it is too classical (what is it doing in WF problemset?), I'm sure someone must have invented it independently.

If your wrong solution passes all CF Gym tests, write me and I will add new tests. But more likely your Accepted solution from WF will get WA in Gym :)

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