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.*;
public class Main{
 public static void main(String[] args){
   Scanner sc = new Scanner(System.in);
   String S = sc.next();

   boolean flg = false;
   int count = 0;
   if(S.charAt(0)!='A') flg = true;
   if(S.charAt(1)=='C') flg = true;
   if(S.charAt(S.length()-1)=='C') flg = true;
   for(int i = 1;i<S.length();i++)
   {
     if(flg) break;
     if(S.charAt(i)=='C') count++;
     else if(Character.isUpperCase(S.charAt(i)))
     {
       flg = true;
     }
   }

   if(count>=2 || count == 0) flg = true;
   
   if(flg) System.out.println("WA");
   else System.out.println("AC");
 }
}