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()
flag1 = S[0] == 'A'

cnt = 0
index = 0
for i in range(2, len(S)-1):
	if S[i] == 'C':
		cnt += 1
		index = i
flag2 = cnt == 1

if not(flag1 and flag2): print 'WA'
else:
	flag3 = True
	for i in range(1, len(S)):
		if i != index:
			n = ord(S[i])
			if n < 97: flag3 = False
	if flag3: print 'AC'
	else: print 'WA'