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.nextLine();
      
      if(s.charAt(0) != 'A')
         System.out.println("WA");
      else if(Character.isUpperCase(s.charAt(1)) || Character.isUpperCase(s.charAt(s.length()-1)))
         System.out.println("WA");
      else {
         int count = 0;
         for(int i = 2; i < s.length(); i++) {
            if(Character.isUpperCase(s.charAt(i)) && count == 1) {
               System.out.println("WA");
               System.exit(0);
            }
            if(s.charAt(i) == 'C')
               count++;  
         }
         if(count != 1)  
            System.out.println("WA");
         else 
            System.out.println("AC");
      }
   }
}