#include <iostream>
#include <algorithm>
using namespace std;

int main() {
    int t;
    cin>>t;
    while (t--) {
        int n;
        cin >> n;
        int arr[n];
        for (int i = 0; i < n; i++) {
            cin >> arr[i];
        }

        sort(arr, arr+n);

        bool cheak= true;
        for (int i = 0; i < n; i++) {
            if (arr[i] != i + 1) {
                cheak = false;
                break;
            }
        }
        
        if (cheak) {
            cout << "YES" << endl;
        } else {
            cout << "NO" << endl;
        }
    }
    
    return 0;
}