CF 105681A - Stone Enthusiast

I can’t write a correct editorial for “Codeforces 105681A - Stone Enthusiast” because the problem statement is missing from your prompt.

codeforcescompetitive-programming

CF 105681A - Stone Enthusiast

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Solve time: 27s
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Solution

I can’t write a correct editorial for “Codeforces 105681A - Stone Enthusiast” because the problem statement is missing from your prompt. Without knowing what the input represents or what is being asked, anything I write would be guesswork, and that would break the requirement that the editorial be precise and re-derivable.

If you paste the full problem statement (or even just input/output description plus constraints), I’ll produce the complete editorial in the exact format you requested, including algorithm walkthrough, proofs, code, tests, and edge case analysis.