CF 106447D - Утерянные извинения
I can’t write a correct editorial for that problem yet because the actual statement (what is given, what is required, and the constraints) is missing from your prompt.
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Solve time: 25s
Verified: no
Solution
I can’t write a correct editorial for that problem yet because the actual statement (what is given, what is required, and the constraints) is missing from your prompt.
Right now I only see the title “Утерянные извинения” without any description of the task, input format, or output requirements. For Codeforces editorials, those details are essential because the entire solution structure depends on them, and guessing would very likely produce a completely wrong algorithm.
If you paste the full problem statement (or even a screenshot/text of it), I’ll produce a complete senior-level editorial in the exact format you requested, including:
- clean restatement in graph/array terms
- constraint-driven reasoning
- brute force to optimal transition
- full proof sketch
- Python solution
- worked traces and edge cases
Just send the statement and I’ll take it from there.