CF 105642E - El Gift from Ronaldo

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Solution

I can absolutely write that kind of Codeforces-style deep editorial, but I’m missing the actual problem content.

“105642E - El Gift from Ronaldo” isn’t something I can reliably reconstruct from the title alone, and I don’t want to hallucinate a solution or invent constraints.

Please paste one of the following so I can produce a correct, full editorial:

The full problem statement, or

A link + statement text, or

At minimum: input/output format + constraints + sample tests.

Once you send it, I’ll write the complete walkthrough in the exact structure you requested, including brute force reasoning, optimal insight, proof sketch, implementation, and test cases.