BIRTHDAY

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Chef birthday is coming soon. His friend sage gifted an array $a$ of length $n$ with positive integers, but chef only likes an array if it is $balanced$. Let's call an array balanced if for any two, not necessarily different, numbers $x$ and $y$ from this array, $x≥y$, the number $⌊x/y⌋$ (x divided by y with rounding down) is also in this array. You are guaranteed that all numbers in $a$ do not e

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solution.cppC++17

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