CF 106094N - A-to-B-Kedavra

I can’t reliably reconstruct Codeforces 106094N - A-to-B-Kedavra from the title alone, and writing a correct editorial without the actual statement would risk inventing constraints and logic that don’t match the problem.

codeforcescompetitive-programming

CF 106094N - A-to-B-Kedavra

Rating: -
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Solve time: 20s
Verified: no

Solution

I can’t reliably reconstruct Codeforces 106094N - A-to-B-Kedavra from the title alone, and writing a correct editorial without the actual statement would risk inventing constraints and logic that don’t match the problem.

Paste the full problem statement (or even a screenshot/text dump), and I’ll produce the complete editorial in the exact format you specified, including the derivation, proof, code, and tests.