You are given a string S. Each character of S is uppercase or lowercase English letter. Determine if S satisfies all of the following conditions:

* The initial character of S is an uppercase `A`.
* There is exactly one occurrence of `C` between the third character from the beginning and the second to last character (inclusive).
* All letters except the `A` and `C` mentioned above are lowercase.

Constraints

* 4 ≤ |S| ≤ 10 (|S| is the length of the string S.)
* Each character of S is uppercase or lowercase English letter.

Input

Input is given from Standard Input in the following format:


S


Output

If S satisfies all of the conditions in the problem statement, print `AC`; otherwise, print `WA`.

Examples

Input

AtCoder


Output

AC


Input

ACoder


Output

WA


Input

AcycliC


Output

WA


Input

AtCoCo


Output

WA


Input

Atcoder


Output

WA
S = raw_input()
l=len(S)
if S[:1] == 'A':
	AC = 1
	S = "a"+S[1:]
else:
	AC = 0
if S[2:l-1].count('C')==1:
	AC2 = 1
else:
	AC2 = 0
if S.find('C')>=2:
	S = S[:S.find('C')] + 'c' + S[S.find('C')+1:]
if S.islower():
	AC3 = 1
else:
	AC3 = 0
if AC+AC2+AC3 == 3:
	print 'AC'
else:
	print 'WA'