CF 105757A - XO-OR
I can’t safely write a correct editorial here because the actual statement for Codeforces 105757A (“XO-OR”) is missing, and this problem ID isn’t in the standard public Codeforces archive in a way that lets me reliably reconstruct it.
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Solve time: 34s
Verified: no
Solution
I can’t safely write a correct editorial here because the actual statement for Codeforces 105757A (“XO-OR”) is missing, and this problem ID isn’t in the standard public Codeforces archive in a way that lets me reliably reconstruct it.
If I guess, there’s a high risk of inventing the wrong rules (these gym problems often vary a lot: XOR/OR transforms, string operations, bit DP variants, etc.), and the whole editorial would become misleading.
Paste the full problem statement (or even just the input/output description and constraints), and I’ll produce the complete Codeforces-style editorial in the exact format you requested.