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
import sys
import re

oomoji = re.compile(r"[A-Z]")
S = list(raw_input())
if S[0] != 'A':
  print 'WA'
  sys.exit(0)
C = 0
for i in range(2,len(S)-1):
  if S[i] == 'C':
    C += 1
  elif oomoji.match(S[i]):
    print 'WA'
    sys.exit(0)
if C != 1 or oomoji.match(S[len(S)-1]) or oomoji.match(S[1]):
  print 'WA'
else :
  print 'AC'

