import java.util.*;
public class SSd {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String ar[] = sc.nextLine().split(",");
        boolean ans = true;
        for(String x:ar){
            if(!x.equals("AC")){
                ans = false;
                break;
            }
        }
        if(ans)
            System.out.println("Done!");
        else
            System.out.println("Failed...");
    }
}