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()
c1 = S[0] == 'A'
count, pos = 0, -1
for i in range(2, len(S)-1):
	if S[i] == "C":
		count += 1
		pos = i
c2 = count == 1

c3 = True
for i in range(len(S)):
	if i == 0 or i == pos:
		continue
	if S[i].isupper():
		c3 = False


if c1 and c2 and c3:
	print 'AC'
else:
	print 'WA'