https://mirror.codeforces.com/gym/104536/problem/F
The answer to this is max(d1,d2,ceil(d1/2)+ceil(d2/2)+1) where d1,d2 are diameters of the two trees.
https://mirror.codeforces.com/gym/104536/problem/F
The answer to this is max(d1,d2,ceil(d1/2)+ceil(d2/2)+1) where d1,d2 are diameters of the two trees.
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