/**
 *  Author : Shafi
 * 
 ***/
#include <iostream>
#include "vector"
#include "algorithm"
using namespace std;

int main() {
    // Write C++ code here
    int tc;
    cin>>tc;
    while(tc--){
        int n;
        cin>>n;
        vector<int>v(n);
        for(auto &it:v){
            cin>>it;
        }
        sort(v.begin(),v.end());
        string ans = "YES";
        for(int i=0;i<n;i++){
            if(v[i] != i+1){
                ans = "NO";
                break;
            }
        }
        cout<<ans<<endl;
    }
    return 0;
}