#include #include using std::cin; using std::cout; const char endl = '\n'; int t, a, b, x, y; int main() { std::ios::sync_with_stdio(false); cin.tie(nullptr); cin >> t; while (t--) { cin >> a >> b >> x >> y; int g = std::__gcd(a, b) * 2; a %= g, b %= g, x %= g, y %= g; auto check = [&](int x, int y) -> bool { return x % g == 0 && y % g == 0; }; cout << (check(x, y) || check(x + a, y + b) || check(x + b, y + a) || check(x + a + b, y + a + b) ? "Y" : "N") << endl; } return 0; }