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It seems that output values for the first 23 tests for problem D in dropbox (here) are all empty.
On Tempe5t → Hard tree problem, 3 years ago
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Thanks a lot for your help!
On Tempe5t → Hard tree problem, 3 years ago
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It doesn't have to be true. While vertices $$$(v, u)$$$ might be neighbouring in $$$T_1$$$ they don't have to be adjacent in $$$T_2$$$. (i.e. structures of both trees are Independent from each other).