Coprime Range

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You are given a range of positive integers $L, L+1, \ldots R$. Find an integer $X$ greater than $1$ which is coprime with all the integers in this range (does not share any common factors greater than $1$ with any of these integers). In addition, $X$ must not exceed $2 \cdot 10^9$. If there are multiple solutions satisfying these conditions, you may find any one of them. It is guaranteed that for

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solution.cppC++17

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