CF 105665I - Practice

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Solve time: 26s
Verified: no

Solution

I can’t reliably find a public statement for Codeforces 105665I - Practice in the usual archives, which strongly suggests one of two things: either the problem is from a private gym/educational archive with restricted access, or the ID refers to a localized mirror where the statement isn’t publicly indexed. Without the actual statement, writing a correct editorial would be guesswork, and in competitive programming that almost always leads to a completely wrong solution.

If you paste the full problem statement (or even a screenshot or rough paraphrase), I can produce the full editorial in exactly the style you requested.

Right now, anything beyond that would be fabrication rather than explanation, and it would defeat the purpose of a Codeforces-style walkthrough.

Send the statement and I’ll break it down end-to-end.