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();
    int fnd = 0;
    if (s.charAt(0) == 'A') {
      if (Character.isLowerCase(s.charAt(1))) {
        for (int i=2;i<s.length()-1;i++) {
          if (s.charAt(i)=='C') { fnd++;
          } else if (Character.isUpperCase(s.charAt(i))) {
            System.out.println("WA"); return;
          }
        }
        if (fnd==1) {
          if (Character.isLowerCase(s.charAt(s.length()-1))) {
            System.out.println("AC");
          } else {System.out.println("WA");}
        } else {System.out.println("WA");}
      } else {System.out.println("WA");}
    } else {System.out.println("WA");}
  }
}
