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
# -*- coding: utf-8 -*-
s = raw_input()
lens=len(s)
lenso=lens-1
a=0
if s[0]=="A":
    if ord(s[1])>=0x5B:
            if ord(s[lenso])>=0x5B:
                if s.find("C")>=0:
                    for i in range(2,lens):
                        if ord(s[i])<=0x5B:
                            a=a+1
                    if a==1:
                        print"AC"
                    else:
                        print"WA"
                else:
                    print"WA"
            else:
                print"WA"
    else:
        print"WA"
else:
    print"WA"
