HackerRank Construct the tree

Revision en1, by _abstract_, 2020-08-03 16:38:24


i have tried a lot but not able to construct the tree. i am not able to understand the code please can any one write in easy language.

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  Rev. Lang. By When Δ Comment
en2 English _abstract_ 2020-08-03 16:40:02 20 Tiny change: 'n any one write in easy l' -> 'n any one make me understand in easy l'
en1 English _abstract_ 2020-08-03 16:38:24 288 Initial revision (published)