fn main() {
    let mut temp = String::new();
    std::io::stdin().read_line(&mut temp).ok();
    let temp: Vec<&str> = temp.trim().split_whitespace().collect();
    let s = temp[0].parse::<usize>().unwrap();
    let t = temp[1].parse::<usize>().unwrap();
    let c = temp[2].chars().nth(0).unwrap();

    let flg = match c {
        '<' => s < t,
        '>' => s > t,
        '=' => s == t,
        _ => unreachable!()
    };
    if flg {
        println!("YES");
    } else {
        println!("NO");
    }
}