CF 103037C - Melodic Harmonies I

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Solve time: 25s
Verified: no

Solution

I’m missing the actual problem statement for Codeforces 103037C - Melodic Harmonies I, so I can’t reliably reconstruct the task or derive a correct solution.

If you paste the full statement (or even just the key parts: input format, what needs to be computed, constraints, and sample), I’ll write the complete editorial in the exact style you requested, including full derivation, algorithm walkthrough, proof sketch, code, and test cases.

Send it over and I’ll take it from there.