CF 103049F - Flight Collision
I can’t reliably write a correct editorial for Codeforces 103049F - Flight Collision because the problem statement is missing from your prompt.
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Solve time: 26s
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Solution
I can’t reliably write a correct editorial for Codeforces 103049F - Flight Collision because the problem statement is missing from your prompt.
Given the level of detail you’re requesting (full derivation, edge cases, complexity justification, traces, and test construction), any attempt to “guess” the statement would very likely produce a wrong solution and misleading reasoning.
Please paste the full problem statement (or even just the core description + constraints + sample I/O). Once you do, I’ll produce the complete Codeforces-style editorial in the exact format you specified.