CF 103937D - Hardcore Haircuts

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Solve time: 27s
Verified: no

Solution

I don’t have the actual statement of Codeforces 103937D “Hardcore Haircuts” in your prompt, so I can’t reliably reconstruct the problem or produce a correct editorial.

Right now the input/output sections are empty, which means any solution I write would be guessing, and that would defeat the purpose of a proper Codeforces editorial.

If you paste the full problem statement (or even just the key parts: what is given, what needs to be computed, constraints, and sample I/O), I’ll write the complete editorial in the exact style you requested, including the full algorithm walkthrough, proof idea, Python solution, and test cases.