CF 106403J - Best Friends
Sure-please paste the full problem statement (or link/text). If it’s a Codeforces problem, include as much as you can: input/output format, constraints, and sample tests.
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Solve time: 25s
Verified: no
Solution
Sure-please paste the full problem statement (or link/text).
If it’s a Codeforces problem, include as much as you can: input/output format, constraints, and sample tests. Once I have that, I’ll write a proper competitive programming editorial with intuition, key observations, solution approach, complexity, and edge cases.