CF 106391C - Magic numbers (easy version)

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Solve time: 29s
Verified: no

Solution

I can’t write a correct Codeforces editorial from the problem code alone here because the statement content is missing.

“106391C - Magic numbers (easy version)” isn’t enough to reliably reconstruct the task, and guessing would risk producing a completely wrong solution and explanation.

If you paste the full problem statement (or even a screenshot / rough description), I’ll produce the full senior-level editorial in the exact format you requested, including the algorithm derivation, proof sketch, code, and edge-case analysis.