Tree Decorations

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IIIT Lucknow had a big tree with $N$ nodes, to prepare for Equinox the team decided to decorate the tree by putting lights on it, but the team couldn't decide on one type and so the tree ended up having a lot of different types of lights on it. Each light has a power rating associated with it, and the amount of power consumed by the light is equal to it's rating times it's distance from the powe

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solution.cppC++17

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