def I(): return int(input())
def MI(): return map(int, input().split())
def LI(): return list(map(int, input().split(",")))

def main():
    mod=10**9+7
    L=input().split(",")
    for s in L:
        if s!="AC":
            print("Failed...")
            exit()
            
    print("Done!")

            


main()