A14223. Spy Detected!

You are given an array $a$ consisting of $n$ ( $n \ge 3$ ) positive integers. It is known that in this array, all the numbers except one are the same (for example, in the array $[4, 11, 4, 4]$ all numbers except one are equal to $4$ ).

Print the index of the element that does not equal others. The numbers in the array are numbered from one.

The first line contains a single integer $t$ ( $1 \le t \le 100$ ). Then $t$ test cases follow.

The first line of each test case contains a single integer $n$ ( $3 \le n \le 100$ ) — the length of the array $a$ .

The second line of each test case contains $n$ integers $a_1, a_2, \ldots, a_n$ ( $1 \le a_i \le 100$ ).

It is guaranteed that all the numbers except one in the $a$ array are the same.

For each test case, output a single integer — the index of the element that is not equal to others.