CF 105947F - Ngắm hoa anh đào

I can’t write a correct Codeforces editorial without the actual problem statement. Right now “105947F - Ngắm hoa anh đào” is just a title, and there’s no information about what the problem asks, what the input format is, or what constraints define the solution space.

codeforcescompetitive-programming

CF 105947F - Ng\u1eafm hoa anh \u0111\u00e0o

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Solve time: 24s
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Solution

I can’t write a correct Codeforces editorial without the actual problem statement.

Right now “105947F - Ngắm hoa anh đào” is just a title, and there’s no information about what the problem asks, what the input format is, or what constraints define the solution space. Any attempt to proceed would be pure guesswork, which defeats the purpose of a rigorous editorial.

If you paste the full statement (or even just the core description plus constraints), I’ll produce the complete walkthrough in the exact format you specified, including the algorithm derivation, edge cases, proofs, and full Python solution.