#include <iostream>
#include <vector>
#include <algorithm>

using namespace std;

bool m(vector<int> &a, int n) {
    sort(a.begin(), a.end());

    for (int i = 0; i < n; ++i) {
        if (a[i] != i + 1) {
            return false;
        }
    }
    return true;
}

int main() {
    int t;
    cin >> t;

    while (t--) {
        int n;
        cin >> n;

        vector<int> a(n);
        for (int i = 0; i < n; ++i) {
            cin >> a[i];
        }

        if (m(a, n)) {
            cout << "YES\n";
        } else {
            cout << "NO\n";
        }
    }

    return 0;
}