Call me, Maybe

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A group of students thought of creating a different VOIP network. The network, rather than being any general graph, was a tree. Every user was assigned a unique userid. This network was hierarchical, i.e there was an admin. The parent of a user is the user connected to it on the unique path when it calls the admin. All users had a parent user except the admin. All was working fine, until a weird

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solution.cppC++17

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