use proconio::input;

fn main() {
    input! {
        t: usize,
        mut abcd: [(i64, i64, i64, i64); t],
    }

    let output = abcd
        .iter()
        .map(|&(a, b, c, d)| if solve(a, b, c, d) { "Yes" } else { "No" })
        .collect::<Vec<_>>()
        .join("\n");
    println!("{output}");
}

fn solve(a: i64, b: i64, c: i64, _d: i64) -> bool {
    a != 0 && b.pow(2) > 3 * a * c
}