CF 105523D - Доски
I cannot locate a reliable statement for Codeforces 105523D - “Доски” in the accessible archive data, and the mirror pages do not contain a consistent problem description. Without the actual task statement, any editorial would risk being about the wrong problem.
CF 105523D - \u0414\u043e\u0441\u043a\u0438
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Solve time: 26s
Verified: no
Solution
I cannot locate a reliable statement for Codeforces 105523D - “Доски” in the accessible archive data, and the mirror pages do not contain a consistent problem description. Without the actual task statement, any editorial would risk being about the wrong problem.
If you paste the full problem statement (or even just the input/output rules and constraints), I can produce the complete Codeforces-style editorial exactly in the format you requested, including the full reasoning, algorithm derivation, Python solution, and edge case analysis.
Send the statement and I will continue immediately.