fn main() {
    let mut buf = String::new();
    let mut input = {
        use std::io::Read;
        std::io::stdin().read_to_string(&mut buf).unwrap();
        buf.split_whitespace()
    };

    let n: String = input.next().unwrap().parse().unwrap();

    let output = if n.contains("4") && n.contains("6") {
        "Beautiful"
    } else {
        "..."
    };

    println!("{}", output);
}