Chef and Distinct Numbers

Given an array $A$ of size $N$ , check if there exist any pair of index $i,j$ such that $A_i = A_j$ 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 integer $N$. - The second line of each test case contains $N$ space separated integers $A_i$. ### Output For each tes