CF 106447B - Забытая история

Sure. Please provide the Codeforces problem statement (or a link/title), constraints, and any examples if available.

CF 106447B - \u0417\u0430\u0431\u044b\u0442\u0430\u044f \u0438\u0441\u0442\u043e\u0440\u0438\u044f

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Solve time: 26s
Verified: no

Solution

Sure. Please provide the Codeforces problem statement (or a link/title), constraints, and any examples if available. I’ll write a competitive programming editorial with:

  • Problem restatement and observations
  • Key idea / intuition
  • Proof of correctness
  • Algorithm
  • Complexity analysis
  • Implementation notes
  • Reference solution (if you want, in C++17)