CF 105515A - Подготовка к олимпиаде

The problem statement is missing from your prompt, so I don’t have the actual task definition for Codeforces 105515A.

codeforcescompetitive-programming

CF 105515A - \u041f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043a\u0430 \u043a \u043e\u043b\u0438\u043c\u043f\u0438\u0430\u0434\u0435

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Solve time: 29s
Verified: no

Solution

The problem statement is missing from your prompt, so I don’t have the actual task definition for Codeforces 105515A.

Right now I can’t reliably reconstruct what “Подготовка к олимпиаде” asks, and writing a full editorial without the statement would inevitably turn into guessing, which would make the solution incorrect or misleading.

Paste the full problem statement (or even just the key parts: input format, output format, constraints), and I’ll produce the complete editorial in the exact format you specified.