fn main() {
    let mut vec_a = input_i64();
    let er;
    let ui;
    let fs;

    er = vec_a[0];
    ui = vec_a[1];
    fs = vec_a[2];

    if er <= ui && er <= fs {
        println!("Yes");
    } else {
        println!("No")
    }
}

fn input_i64() -> Vec<i64> {
    let mut s: String = String::new();
    std::io::stdin().read_line(&mut s).ok();
    let vec: Vec<i64> = s
        .trim()
        .split_whitespace()
        .map(|e| e.parse().ok().unwrap())
        .collect();

    vec
}