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')
c2_indexes = []
for i, s in enumerate(S):
    if i < 2 or i == len(S)-1: continue
    if s == 'C': c2_indexes.append(i)
c2 = (len(c2_indexes) == 1)
c3 = True
if c1 and c2:
    for i, s in enumerate(S):
        if i == 0 or i == c2_indexes[0]: continue
        if s.isupper():
            c3 = False
            break
if c1 and c2 and c3:
    print 'AC'
else:
    print 'WA'