import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        String str = sc.next();
        String S[] = str.split(",");
        int sum = 0;
        for(int i=0;i<S.length;i++)
        {
            if(S[i].equals("AC"))
            {
                sum++;
            }
        }
        if(S.length==sum)
        {
            System.out.println("Done!");
        }
        else
        {
            System.out.println("Failed...");
        }
    }
}