Finding a Centroid
Given a tree of n nodes, your task is to find a centroid, i.e., a node such that when it is appointed the root of the tree, each subtree has at most \lfloor n/2 \rfloor nodes. Input The first input line contains an integer n: the number of nodes. The nodes are numbered 1,2,…,n. Then there are n-1 lines describing the edges. Each line contains two integers a and b: there is an edge between nodes
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solution.cppC++17
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