using System;
using System.Linq;
using System.Collections.Generic;


static class NagataKanaIsAGenius {
    public static void Main() {
        foreach(String s in Console.ReadLine().Split(',')){
            if(s!="AC"){
                Console.WriteLine("Failed...");
                Environment.Exit(0);
            }
        }
        Console.WriteLine("Done!");
    }
}