1
3
5 3 4
 6
5
5 3 4 4 5
3
1 1 1
5
4 4 3 4 4
5
5 5 4 3 2
3
1 1 2
5
5 4 3 5 5
 1
3
10 1 5

1
 1
-1
2
2
3
1
 1

for t in range(int(input())):
    n=int(input())
    arr=[int(k) for k in input().split()]
    lmax=min(arr)
    ans=-1
    for i in range(n):
        if arr[i]>lmax:
            ans=i
    print(ans+1)
