CF 105862J - XOR MSB

I can absolutely write that kind of full Codeforces-style editorial, but I’m missing the actual problem statement for 105862J - XOR MSB. Without it, I’d be forced to guess the task, constraints, and intended solution, which would very likely produce a misleading editorial.

CF 105862J - XOR MSB

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Solve time: 20s
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Solution

I can absolutely write that kind of full Codeforces-style editorial, but I’m missing the actual problem statement for 105862J - XOR MSB. Without it, I’d be forced to guess the task, constraints, and intended solution, which would very likely produce a misleading editorial.

Please paste the full statement (or even a screenshot / rough description). Once I have it, I’ll produce a complete, senior-level editorial in the exact format you requested, including:

  • clean restatement of the problem
  • naive vs optimal derivation
  • full algorithm walkthrough
  • correctness intuition
  • Python solution
  • worked traces, edge cases, and asserts

Just send the statement and I’ll proceed.