#!/usr/bin/env python3
import sys, math, itertools, heapq, collections, bisect
input = lambda: sys.stdin.buffer.readline().rstrip().decode('utf-8')
sys.setrecursionlimit(10**8)
inf = float('inf')
ans = count = 0
i=0
f=0

s=input()
n=len(s)
while i<n:
    if s[i:i+2]=="AC":
        i+=3
    elif s[i:i+2] == "WA":
        f=1
        i+=3
    elif s[i:i+2] in {"TL","ML"}:
        f=1
        i+=4
    
print("Done!" if not f else "Failed...")