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()
if s[0] != 'A':
	print 'WA'
else:
	if s[-1] != 'A' and s[-1] != 'C' and not s[-1].islower():
		print 'WA'
	elif s[1] != 'A' and s[1] != 'C' and not s[1].islower():
		print 'WA'
	else:
		ss = s[2:-1]
		c = 0
		flag = True
		for sss in ss:
			if sss == 'C':
				c += 1
			else:
				if sss != 'A' and not sss.islower():
					flag = False
					break
		if c != 1:
			flag = False
		if flag:
			print 'AC'
		else:
			print 'WA'