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 a = sc.nextLine();
    String str = "WA";
    int count = 0;
    boolean f = true;
    int len = a.length();
    if(a.charAt(0) == 'A'){
      for(int i = 2;i < len-1;i++){
        if(a.charAt(i)=='C'){
          count++;
        }else{
          if(Character.isUpperCase(a.charAt(i)))f=false;
        }
      }
    }
    if(Character.isUpperCase(a.charAt(1)))f=false;
    if(Character.isUpperCase(a.charAt(len-1)))f=false;
    if(count == 1 && f)str = "AC";
    System.out.println(str);
  }
}