#include<iostream>
#include<algorithm>
#include<string>
using namespace std;
#define INF -10000

int main() {
    int a[20];
    int T;
    int n;
    int flag;
    cin >> T;
    while (T--) {
        cin >> n;
        for (int i = 1; i <= n; i++) {
            scanf("%d", &a[i]);
            if (a[i] == n)
                flag = i;
        }
        int count = 1;
        int t = a[flag];
        t--;
        for (int i = flag - 1; i >= 1; i--) {
            if (a[i] == t) {
                count++;
                t--;
            }
        }
        cout << n - count << endl;
    }
}