Stick Game

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You have N wooden sticks, which are labeled from 1 to N. The i-th stick has a length of Li. Your friend has challenged you to a simple game: you will pick three sticks at random, and if your friend can form a triangle with them (degenerate triangles included), he wins; otherwise, you win. You are not sure if your friend is trying to trick you, so you would like to determine your chances of winning

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solution.cppC++17

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