Gift of a Friend

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Sufiyan is an engineering student. He loves data structures a lot, especially binary tree. Once he gifted his friend Irshad a rooted directed binary tree. As Irshad doesn't know much about trees, he wonders how to find the root of the tree. Irshad needs your help. You will be given a binary tree consisting of n nodes. All the nodes are numbered from 0 to n-1. Your task is to print the number on t

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solution.cppC++17

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