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();
    String head = s.substring(0,1);
    String last = s.substring(2,s.length()-1);
    int ch = 0;
    if(head.equals("A"))ch++;
    if(last.length() - last.replace("C","").length() == 1)ch++;
    if(ch != 2){
      System.out.println("WA");
      return;
    }
    last = s.substring(2,s.length());
    last = last.replace("C","");
    String ALP[] = {"A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z"};
    for(String al:ALP){
      if(last.contains(al) || s.substring(1,2).equals(al)){
        System.out.println("WA");
        return;
      }
    }
    System.out.println("AC");
  }
}
