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 boolean test(String test){
    int c = 0;
    for(int i = 0;i < test.length();i++){

      if(i == 0 ){
        if(test.charAt(i) == 'A'){
          continue;
        }else{
          return false;
        }
      }
      if(i >= 2 && i <= test.length() - 2){
        if(test.charAt(i) == 'C'){
          c++;
          if(c>1){
            return false;
          }
          continue;
        }
      }
      if(Character.isUpperCase(test.charAt(i))){
        return false;
      }
  }
  if(c == 0){
  return false;
}
  return true;
}
  public static void main(String args[]){
    Scanner scan = new Scanner(System.in);
    String a = scan.next();
    if(test(a)){
      System.out.println("AC");
    }else{
      System.out.println("WA");
    }
  }
}