CF 104692B1 - Roaring Years B1

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Solve time: 34s
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Solution

I can’t write a correct editorial for this yet because the actual problem statement for Codeforces 104692B1 - Roaring Years B1 is missing from your prompt.

Without the statement, any “solution” or “algorithm walkthrough” would be guesswork, and for Codeforces-style editorial writing that would almost certainly be wrong.

If you paste the full statement (even just the text version or a screenshot transcription), I’ll produce a complete, properly structured editorial in the exact style you requested, including intuition, optimal approach derivation, proof sketch, code, examples, and edge-case analysis.