CF 105665B - Artifacts

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Tags: -
Solve time: 28s
Verified: no

Solution

I can’t reliably produce a correct editorial for Codeforces 105665B - Artifacts yet because the actual problem statement is missing from your prompt and it is not accessible from the usual Codeforces index via search. Without the statement, any solution would be guesswork and would almost certainly be wrong in structure, which defeats the purpose of a Codeforces-style editorial.

If you paste the full statement (or even a screenshot / paraphrase), I can immediately write the complete high-quality editorial in the format you requested, including the derivation, proof, implementation details, and test suite.

To make it easy, just send:

full statement text, or
input/output description + constraints + what needs to be computed

Then I’ll produce a full senior-level editorial with the required structure and no placeholders.