using System;
public class Hello{
    public static void Main(){
        string str = Console.ReadLine();
        string[] str2 = str.Split(',');
        string judge = "Done!";
        for(int i=0;i<str2.Length;i++){
            if(str2[i]!="AC"){
                judge = "Failed...";
                break;
            }
        }
        Console.WriteLine(judge);
    }
}