On example,2nd test case, in the third query already exist a path with distances 3 between 2 leaves , 5-4-2-3, but the answer wasn't "-1 -1 -1".Am I receiving WA veredict for that? Submision:233191318.
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your code is doing wrong when 4 is reppearing, in that case ur tree is
1-2-3-5
1-2-4
there is no 2 leaf nodes with distance 4.