#include <iostream>
#include <cstdio>
#include <cstring>
#include <algorithm>
#include <string>
using namespace std;
int main()
{
	int n,a[10002];
	int t;
	scanf("%d",&t);
	while(t--)
	{
		scanf("%d",&n);
		for(int i=1;i<=n;++i)
			scanf("%d",a+i);
		int sum=0;
		for(int i=1;i<=n;++i)
			while(a[i]!=i)
				swap(a[i],a[a[i]]),++sum;
		printf("%d\n",sum);
	}
	return 0;

}