#include using namespace std; #define rep(i, n) for (int i = 0; i < (n); ++i) using ll = long long; using ull = unsigned long long; int main() { cin.tie(nullptr)->sync_with_stdio(false); int t; cin >> t; while (t--) { int a, b, c, d; cin >> a >> b >> c >> d; // f' = 3a x^2 + 2b x + c -> 4b^2 - 4 3a c cout << (a != 0 && 4 * b * b - 12 * a * c > 0 ? "Yes" : "No") << '\n'; } return 0; }