#include <bits/stdc++.h>

using namespace std;

using ll = long long;
using vi = vector<int>;
using pi = pair<int, int>;

void solve ()
{
    ll n, a, b;
    cin >> n >> a >> b;

    string sa = to_string(a), sb = to_string(b), sn = to_string(n);
    sa += sb;
    sort(sa.begin(), sa.end());
    sort(sn.begin(), sn.end());

    bool good = n == a * b && sb.size() * 2 == sn.size() && (a % 10 != 0 || b % 10 != 0) && sa == sn;

    cout << (good ? "YES\n" : "NO\n");
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    int t;
    cin >> t;
    while (t--)
        solve();
    return 0;
}