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.

-----Sample Input-----
AtCoder

-----Sample Output-----
AC

The first letter is A, the third letter is C and the remaining letters are all lowercase, so all the conditions are satisfied.