CF 105851F - 腐蚀与膨胀
The statement content is missing from your prompt (only the title “腐蚀与膨胀” is present, with no input/output or description). Without the actual rules of the process, there’s no way to reconstruct the intended algorithm or write a correct Codeforces-style editorial.
CF 105851F - \u8150\u8680\u4e0e\u81a8\u80c0
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Solve time: 31s
Verified: no
Solution
The statement content is missing from your prompt (only the title “腐蚀与膨胀” is present, with no input/output or description). Without the actual rules of the process, there’s no way to reconstruct the intended algorithm or write a correct Codeforces-style editorial.
If you paste the full problem statement (including input format, operations, and constraints), I can produce the complete editorial in the exact format you specified.