CF 106269C - Полный назад! Самый полный назад!

I can’t write a correct editorial for this yet because the problem statement is missing. Right now I only see the title “Codeforces 106269C - Полный назад! Самый полный назад!

codeforcescompetitive-programming

CF 106269C - \u041f\u043e\u043b\u043d\u044b\u0439 \u043d\u0430\u0437\u0430\u0434! \u0421\u0430\u043c\u044b\u0439 \u043f\u043e\u043b\u043d\u044b\u0439 \u043d\u0430\u0437\u0430\u0434!

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Solve time: 24s
Verified: no

Solution

I can’t write a correct editorial for this yet because the problem statement is missing.

Right now I only see the title “Codeforces 106269C - Полный назад! Самый полный назад!”, but there is no description of the task, input/output format, or constraints. Without that, any solution would be a guess, and a competitive programming editorial only makes sense if it is tied precisely to the actual mechanics of the problem.

If you paste the full statement (or even just the key parts: what is given, what needs to be computed, and constraints), I can produce a complete Codeforces-style editorial in the exact format you requested, including the derivation, algorithm walkthrough, proof sketch, and test cases.