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

    if a == c {
        println!("No");
        return;
    }
    let c = c+n;
    if c - a <= n {
        println!("{}", if a.min(c) <= b && b <= a.max(c) { "No" } else { "Yes" });
    } else {
        println!("{}", if b <= c.min(a) || c.max(a) <= b { "No" } else { "Yes" });
    }
}