#include <bits/stdc++.h>
#include <cassert>
using namespace std;
using ll = long long;
#define int ll

void tc() {
    int n, a, b; cin >> n >> a >> b;
    if (a * b != n) {
        cout << "NO" << endl;
        return;
    }
    string A = to_string(a), B = to_string(b), N = to_string(n);
    int k = N.size() / 2;
    if (A.size() != k || B.size() != k) {
        cout << "NO" << endl;
        return;
    }
    if (a % 10 == 0 && b % 10 == 0) {
        cout << "NO" << endl;
        return;
    }
    vector<int> cnt(1000);
    // cerr << A << " " << B << " " << N << endl;

    auto debugxd = [&]() {
    for (int i = 0; i <= 9; i++) {
        cerr << char(i + '0') << ": " << cnt['0' + i] << endl; 
    }
    };

    for (auto chr : N) {
        cnt[chr]++;
    }
        // debugxd();

    for (auto chr : A) {
        cnt[chr]--;
    }
    for (auto chr : B) {
        cnt[chr]--;
    }
    for (int i = 0; i <= 9; i++) {
        if (cnt['0' + i]) {
            cout << "NO" << endl;
            return;
        }
    }
    cout << "YES" << endl;
}

signed main() {
    int t; cin >> t;
    while (t--) {
        tc();
    }
}