CF 105818H - Permutation Composition

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Solve time: 16s
Verified: no

Solution

I can’t reliably write a correct editorial for this problem as-is because the actual problem statement is missing from your prompt. “Permutation Composition” could refer to several different Codeforces tasks with very different intended solutions (cycle decomposition, functional graphs, segment composition, sparse table over permutations, etc.), and guessing would produce a misleading editorial.

If you paste the full statement (or even just the input/output description and constraints), I’ll write the complete Codeforces-style editorial in the exact structure you requested, including derivation, invariants, and a full implementation.