#include <iostream>
#include <string>

using namespace std;

void printNo() {
	cout << "NO" << endl;
}


int main()
{
	int t;
	long n, a, b;

	cin >> t;

	while (t--) {
		cin >> n >> a >> b;

		if (a * b != n) {
			printNo();
			continue;
		}

		if (a % 10 == 0 && b % 10 == 0) {
			printNo();
			continue;
		}

		string a_str, b_str;
		a_str = to_string(a);
		b_str = to_string(b);

		if (a_str.size() != b_str.size()) {
			printNo();
			continue;
		}

		string n_str = to_string(n);
		if (n_str.size() != a_str.size() * 2) {
			printNo();
			continue;
		}

		int n_arr[9] = { 0, 0, 0, 0, 0, 0, 0, 0, 0 };
		int ab_arr[9] = { 0, 0, 0, 0, 0, 0, 0, 0, 0 };
		bool isVampire = true;

		for (size_t i = 0; i < a_str.size(); i++)
		{
			ab_arr[a_str[i] - '0']++;
		}

		for (size_t i = 0; i < b_str.size(); i++)
		{
			ab_arr[b_str[i] - '0']++;
		}

		for (size_t i = 0; i < n_str.size(); i++)
		{
			n_arr[n_str[i] - '0']++;
			if (n_arr[n_str[i] - '0'] > ab_arr[n_str[i] - '0']) {
				printNo();
				isVampire = false;
				break;
			}
		}

		if (isVampire) {
			for (size_t i = 0; i < 10; i++)
			{
				if (n_arr[i] != ab_arr[i]) {
					printNo();
					isVampire = false;
					break;
				}
			}
		}
		

		if (isVampire) cout << "YES" << endl;
	}
	return 0;
}