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 java.util.*;

class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String S = sc.next();
        String ans = "AC";
        if(S.charAt(0)!='A') ans = "WA";
        int cntC = 0;
        for(int i=2;i<S.length()-1;i++){
            if(S.charAt(i)=='C') cntC ++;
        }
        if(cntC!=1) ans = "WA";
        int cnt = 0;
        for(int i=1;i<S.length();i++){
            char cur = S.charAt(i);
            if(cur<'a'||cur>'z') cnt++;
        }
        if(cnt!=1) ans = "WA";
        System.out.println(ans);
    }
}
