#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vi = vector<ll>;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    int t;
    cin >> t;
    for (int i = 1; i <= t; i++) {
        string big, small1, small2;
        cin >> big >> small1 >> small2;

        int ibig, ismall1, ismall2;
        ibig = stoi(big);
        ismall1 = stoi(small1);
        ismall2 = stoi(small2);
        ll k = big.size() / 2;
        if (ibig != ismall1 * ismall2) {
            cout << "NO" << "\n";
            continue;
        }

        if (small1.size() != k || small2.size() != k) {
            cout << "NO" << "\n";
            continue;
        }

        if (!(ismall1 % 10 != 0 || ismall2 % 10 != 0)) {
            cout << "NO" << "\n";
        }
        string con = string(small1 + small2);
        if (is_permutation(big.begin(), big.end(), con.begin(), con.end())) {
            cout << "YES" << "\n";
        } else {
            cout << "NO" << "\n";
        }
    }


    return 0;
}