fn main() {
    let mut s = String::new();
    std::io::stdin().read_line(&mut s).ok();
    let ss: Vec<String> = s.trim().split(',').map(|e| e.parse().unwrap()).collect();
    for i in ss {
        if i != "AC" {
            println!("Failed...");
            return;
        }
    }
    println!("Done!");
}