fn main() {
	let mut s = String::new();
	std::io::stdin().read_line(&mut s).ok();
	let mut itr = s.trim().split_whitespace();
	let s: u16 = itr.next().unwrap().parse().unwrap();
	let t: u16 = itr.next().unwrap().parse().unwrap();
	let c: char = itr.next().unwrap().chars().nth(0).unwrap();
	
	let ans = match c {
		'<' => s < t,
		'>' => s > t,
		'=' => s == t,
		_ => unreachable!(),
	};
	println!("{}", if ans { "YES" } else { "NO" });
}