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
from collections import Counter
def capital(c):
  return c in 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'

def solve(s):
  if s[0] != 'A':
    return False

  if capital(s[1]) or capital(s[-1]):
    return False

  st = Counter(s[2:-1])
  if st['C'] != 1:
    return False
  for c in s[2:-1]:
    if c == 'C': continue
    if capital(c): return False
  return True

s=raw_input()
if solve(s):
  print 'AC'
else:
  print 'WA'
