fn main() {
    for i in 0..1000 {
        println!("{:03}", i);
        let mut s = String::new();
        std::io::stdin().read_line(&mut s).ok();
        let s: &str = s.trim();
        match s {
            "unlocked" => { std::process::exit(0); },
            _ => {},
        }
    }
}