#include <iostream>
#include <cstdio>
#include <cstring>
#include <algorithm>
using namespace std;
#define M 1009
int a[M];
int main()
{
    int t;
    scanf("%d",&t);
    while(t--)
    {
        int n;
        scanf("%d",&n);
        for(int i = 0;i < n;i++) scanf("%d",&a[i]);
        int ans = 0;
        int num = n;
        for(int i = n-1;i >= 0;i--)
        {
            if(a[i] == num)
            {
                num--;
                ans++;
            }
        }
        printf("%d\n",n-ans);
    }
    return 0;
}