CF 104037B - Decode

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Solution

I can write the full editorial in exactly that format, but I’m missing the actual problem statement for Codeforces 104037B - Decode.

Right now the prompt only includes headers for Input/Output, so there’s no way to reliably reconstruct:

what “decoding” means in this context,
what transformations are allowed,
what the constraints are,
or what the correct algorithmic insight should be.

If I try to proceed without it, I’d be guessing the problem, which would produce a misleading editorial.

Paste the full statement (or even a screenshot / raw text), and I’ll turn it into a complete Codeforces-style editorial with all the sections, walkthrough, code, and edge-case analysis exactly in your requested format.