Chef and Sum

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Given an array $A$ of size $N$ and an integer $K$ , check if there exist any pair of index $i,j$ such that $A_i + A_j = K$ and $i \neq j$ ### Input - The first line of the input contains a single integer $T$ denoting the number of test cases. - The first line of each test case contains two space separated integer $N$ and $K$ respectively. - The second line of each test case contains $

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solution.cppC++17

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