CF 106439A - Ancient Trees

I can write the full editorial, but the actual problem statement for Codeforces 106439A - Ancient Trees is missing from your prompt.

codeforcescompetitive-programming

CF 106439A - Ancient Trees

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Solution

I can write the full editorial, but the actual problem statement for Codeforces 106439A - Ancient Trees is missing from your prompt. The sections under “Problem Statement”, “Input”, and “Output” are empty, and I could not reliably identify the problem from the ID alone.

Please paste the full statement (or provide the problem link), and I’ll produce the complete editorial in the requested format, including the proof, algorithm walkthrough, Python solution, examples, tests, and edge cases.