Chef and Average on a Tree

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Chef has a tree with N nodes. Each node of the tree has an integer weight associated with it. Let's define the cost of a sequence of numbers as the arithmetic mean of all elements of the sequence. Next, let's define the cost of a path in the tree as the cost of the sequence of weights of all nodes belonging to the path. (It's possible for a path to contain only one node.) A set of paths in the

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solution.cppC++17

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