#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <algorithm>
#include <climits>
#include <cstring>
#include <string>
#include <set>
#include <map>
#include <queue>
#include <stack>
#include <vector>
#include <list>
#define rep(i,m,n) for(i=m;i<=n;i++)
#define rsp(it,s) for(set<int>::iterator it=s.begin();it!=s.end();it++)
#define mod 1000000007
#define inf 0x3f3f3f3f
#define vi vector<int>
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define ll long long
#define pi acos(-1.0)
#define pii pair<int,int>
#define Lson L, mid, rt<<1
#define Rson mid+1, R, rt<<1|1
const int maxn=2e4+10;
using namespace std;
ll gcd(ll p,ll q){return q==0?p:gcd(q,p%q);}
ll qpow(ll p,ll q){ll f=1;while(q){if(q&1)f=f*p;p=p*p;q>>=1;}return f;}
int n,m,k,t,a[maxn];
ll sum;
int main()
{
    int i,j;
    while(~scanf("%d",&t))
    {
        while(t--)
        {
            sum=0;
            scanf("%d",&n);
            rep(i,1,n)scanf("%d",&a[i]);
            sort(a+1,a+n+1);
            rep(i,1,n)
            {
                sum+=a[i];
                if(sum<(ll)i*(i-1))break;
            }
            if(i<=n||sum!=(ll)n*(n-1))puts("F");
            else puts("T");
        }
    }
    //system("Pause");
    return 0;
}