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 str = sc.next();
    boolean flag = true;

    if (!(String.valueOf(str.charAt(0)).equals("A"))) {
      flag = false;
    } else if (Character.isUpperCase(str.charAt(1)) || Character.isUpperCase(str.charAt(str.length()-1))) {
      flag = false;
    } else {
      int count = 0;

      for (int i = 2; i < str.length()-1; i++) {
        if (String.valueOf(str.charAt(i)).equals("C")) {
          count++;
        } else if (Character.isUpperCase(str.charAt(i))) {
          flag = false;
        }
      }

      if (count != 1) {
        flag = false;
      }
    }

    if (flag == true) {
      System.out.println("AC");
    } else {
      System.out.println("WA");
    }
  }
}
