#define _CRT_SECURE_NO_WARNINGS
#define _SILENCE_CXX17_C_HEADER_DEPRECATION_WARNING
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int N = 1e5 + 50;
ll a[N];
int C[N];
int main()
{
    int T, n;
    scanf("%d", &T);
    while (T--)
    {
        memset(C, 0, sizeof C);
        scanf("%d", &n);
        for (int i = 1; i <= n; i++) scanf("%lld", a + i);
        ll ans = 0;
        for (int i = 1; i <= n; i++)
        {
            int cnt = 0;
            for (int x = a[i]; !C[x]; x = a[x])
                C[x] = true, cnt++;
            if (cnt) ans += cnt - 1;
        }
        printf("%lld\n", ans);
    }
    return 0;
}