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();
    char[] str = S.toCharArray();
    
    int countC = 0;
    int countBig = 0;
      if(str[0] == 'A'){
        for(int i = 2 ; i <= str.length-2 ; i++){
          if(str[i] == 'C'){
            countC++;
          }
        }
        if(countC == 1){
          for(int j = 0 ; j < str.length ; j++){
            char h = str[j];
            if(Character.isUpperCase(h)){
              countBig++;
            }
          }
          if(countBig == 2){
            System.out.println("AC");
          }else{
            System.out.println("WA");
          }         
        }else{
          System.out.println("WA");
        }       
      }else{
        System.out.println("WA");
      }   
  }
}