CF 105615B - 一句话题面
I can’t reconstruct a correct editorial from what you’ve provided because the actual problem statement is missing.
CF 105615B - \u4e00\u53e5\u8bdd\u9898\u9762
Rating: -
Tags: -
Solve time: 37s
Verified: no
Solution
I can’t reconstruct a correct editorial from what you’ve provided because the actual problem statement is missing.
Right now, “Codeforces 105615B - 一句话题面” only shows the title and empty Input/Output sections, so there is no information about what the problem is asking, what operations are involved, or what constraints apply. Any attempt to write a solution or analysis would be pure guesswork, which would defeat the purpose of a Codeforces editorial.
If you paste the full statement (even in Chinese or screenshots converted to text), I can produce a complete, properly structured editorial in the format you requested, including a full derivation, algorithm walkthrough, code, and edge-case analysis.