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[] AC = S.split(""); //1文字ずつ分割
    boolean ans = true; 
    int cnt = 0;
    
    if(AC[0].equals("A")){//1文字目＝A
      for(int i = 1; i < AC.length; i++){
        if(AC[i].toUpperCase().equals(AC[i])){//大文字の数を判定
          if(i == 1 || i == AC.length-1){
            ans = false;
          }else{
            if(AC[i].equals("C")){//3文字目までにC
              cnt ++;
            }else{
              ans = false;
            }
          }
        }
      }
    }else{
      ans = false;
    }
    if(cnt != 1){
      ans = false;
    }
        if(ans){
            System.out.println("AC");
        }else{
            System.out.println("WA");
        }
    }
}
