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();
    boolean A = false;
    boolean B = true;
    int C = 0;
    for(int i = 0; i < S.length(); i++){
      if(i == 0){
        if(S.charAt(i) == 'A'){
          A = true;
        }
      }else if(i == 1 || i == S.length()-1){
        if(S.charAt(i) >= 'A' && S.charAt(i) <= 'Z'){
          B = false;
        }
      }else{
        if(S.charAt(i) == 'C'){
          C++;
        }else{
          if(S.charAt(i) >= 'A' && S.charAt(i) <= 'Z'){
            B = false;
          }
        }
      }
    }
    System.out.println((A && B && C==1) ? "AC" : "WA");
  }
}