fn main() {
    let mut abcd = String::new();
    std::io::stdin().read_line(&mut abcd).ok();
    let abcd: Vec<isize> = abcd.trim().split_whitespace().map(|s| s.parse().unwrap()).collect();
    let a = abcd[0];
    let b = abcd[1];
    let c = abcd[2];
    let d = abcd[3];

    let base = (a - c) * (a - c) - 8 * (b - d);
    if base < 0 {
        println!("No");
    } else if base == 0 {
        println!("Yes");
    } else if a == -c {
        let base: f64 = ((base as f64) / 16.0).sqrt() - ((a - c) as f64 / 4.0);
        println!("{} {:.8}", 0, base*base + (a as f64) * base + b as f64);
    } else {
        let base: f64 = ((base as f64) / 16.0).sqrt();
        let x0: f64 =  - (a - c) as f64 / 4.0 + base;
        let x1: f64 =  - (a - c) as f64 / 4.0 - base;
        let y0: f64 =  x0*x0 + (a as f64) * x0 + b as f64;
        let y1: f64 =  x1*x1 + (a as f64) * x1 + b as f64;
        let p: f64 = if x0 > x1 { (y0 - y1) / (x0 - x1) } else { (y1 - y0) / (x1 - x0) };
        let q: f64 = y0 - p * x0;
        println!("{:.8} {:.8}", p, q);
    }
}