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

def calc(S):
	S = list(S)
	if S[0] == 'A' and S[2:-1].count('C') == 1:
		S[0] = 'a'
		idx = S[2:-1].index('C')
		S[2+idx] = 'c'
		for i in S:
			if i < 'a' or 'z' < i:
				return False
	else:
		return False
	return True
	
inp = raw_input()
print 'AC' if calc(inp) else 'WA'
