#include <bits/stdc++.h>

using namespace std;

int main() {
    int t;cin>>t;
    while(t--){
      int n;cin>>n;
      vector<int>vl(n);
      for(int i=0;i<n;i++)cin>>vl[i];
      
      vector<int> vll(n+1,0);
        bool flag = true;
        for (int u: vl) {
            if (u< 1 || u> n || vll[u] != 0) {
                flag = false;
                break;
            }
            vll[u]++;
        }
        
        if(flag)cout<<"YES"<<endl;
        else cout<<"NO"<<endl;
    }

    return 0;
}