CF 1028926 - Birdwatching
The problem statement is missing from your prompt, so there’s no reliable way to reconstruct the intended task.
Rating: -
Tags: -
Solve time: 28s
Verified: no
Solution
The problem statement is missing from your prompt, so there’s no reliable way to reconstruct the intended task.
“Codeforces 1028926 - Birdwatching” looks like an internal/Polygon-style identifier rather than a standard public contest problem, and without the actual statement (input/output definition, constraints, and sample cases), any editorial would be guesswork. That would defeat the purpose of the write-up, since the solution depends entirely on the precise rules.
If you paste the full statement (even raw or unformatted), I can produce the complete editorial in the exact style you specified, including algorithm derivation, proof sketch, code, examples, and edge-case analysis.