#include <iostream>
#include <string>
#include <sstream>
#include <array>
#include <utility>
#include <map>
#include <unordered_set>
#include <set>
#include <cstdint>

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

    std::string line;
    std::istringstream iss;

    int t = 0;
    std::cin >> t;
    std::cin.get();

    for (int i = 0; i < t; i++) {
        std::getline(std::cin, line);
        iss.clear();
        iss.str(line);

        int64_t n, a, b;
        iss >> n >> a >> b;

        std::string n_ = std::to_string(n); //std::cout << "n_: " << n_ << "\n";
        std::string a_ = std::to_string(a); //std::cout << "a_: " << a_ << "\n";
        std::string b_ = std::to_string(b); //std::cout << "b_: " << b_ << "\n\n-----\n";

//        std::cerr << "\n=== " << line << " ===\n\n";

        if (a * b != n) {
            std::cout << "NO\n";
//            std::cout << "soucin: " << a_.length() << ", " << b_.length() << "\n";
            continue;
        }

        if (a_.length() != b_.length() || n_.length() != 2 * a_.length()) {
            std::cout << "NO\n";
//            std::cout << "delka: " << a_ << " " << a_.length() << ", " << b_ << " " << b_.length() << "\n";
            continue;
        }

        if (a % 10 == 0 && b % 10 == 0) {
            std::cout << "NO\n";
//            std::cout << "modulo: " << a_.length() << ", " << b_.length() << "\n";
            continue;
        }

        std::set<char> setN;
        std::set<char> setC;
        
        for (size_t j = 0; j < n_.length(); ++j) {
            setN.insert(n_[j]);
        }

        std::string cat = a_ + b_;
//        std::cout << "cat: " << cat << ", " << cat.length() << '\n';

        for (size_t j = 0; j < cat.length(); ++j) {
            setC.insert(cat[j]);
        }

//        std::cout << "setN: ";
//        for (auto s : setN) {
//            std::cout << s << ", ";
//        }
//        std::cout << "\nSetC: ";
//        for (auto s : setC) {
//            std::cout << s << ", ";
//        }
//        std::cout << "\n";

        if (setC.size() != setN.size()) {
            goto umri;
        }
        
        if (setC != setN)
            goto umri;

        std::cout << "YES\n";
        continue;

        umri:
        std::cout << "NO\n";
    }

    return 0;
}