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();
    
    if(!S.substring(0, 1).equals("A")){
      System.out.println("WA");
    } else if(!S.substring(2, S.length()-1).contains("C")) {
      System.out.println("WA");
    } else  {
      String newS = S.substring(1, S.length()).replaceFirst("C", "c");
      if(!newS.equals(S.substring(1, S.length()).toLowerCase())) {
        System.out.println("WA");
      } else {
        System.out.println("AC");
      }
    } 
  }
}