fn main() {
	let mut s = String::new();
	std::io::stdin().read_line(&mut s).ok();
	println!(
		"{}",
		match &s[..1] {
			"Z" => "1st",
			"B" => "2nd",
			"S" => "3rd",
			"E" => "4th",
			_ => "Alpha",
		}
	)
}