#include <cstring>
#include <iostream>
#include <limits>
#include <stdlib.h>
#include <string.h>
#include <stddef.h>
#include <limits.h>
#include <stdint.h>
#include <ctype.h>

using namespace std;

using ll = long long;

void makeCount(char* str, int* counts) {
    while (*str != '\0') {
        counts[*(str++) - '0'] += 1;
    }
}

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

    int n;
    cin >> n;

    char aStr[100] {};
    char bStr[100] {};
    char bigStr[100] {};

    for (int i = 0; i < n; i++) {
        ll big, a, b;
        cin >> big >> a >> b;

        int smallCounts[10] {};
        int bigCounts[10] {};

        if (a * b != big) {
            cout << "NO\n";
            continue;
        }

        lltoa(big, bigStr, 10);
        int bigLen = strlen(bigStr);

        if (bigLen % 2 != 0) {
            cout << "NO\n";
            continue;
        }

        int k = bigLen / 2;
        lltoa(a, aStr, 10);
        lltoa(b, bStr, 10);

        if (strlen(aStr) != k || strlen(bStr) != k) {
            cout << "NO\n";
            continue;
        }

        if (a % 10 != 0 && b % 10 != 0) {
            cout << "NO\n";
            continue;
        }

        makeCount(aStr, smallCounts);
        makeCount(bStr, smallCounts);
        makeCount(bigStr, bigCounts);

        bool bad = false;

        for (int j = 0; j < n; j++) {
            if (smallCounts[j] != bigCounts[j]) {
                cout << "NO\n";
                bad = true;
                break;
            }
        }

        if (!bad) {
            cout << "YES\n";
        }
    }

    return 0;
}