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);

		// 文字列の入力
		String s = sc.next();
    
		// 出力
		System.out.println(check(s) ? "AC" : "WA");
	}
    public static boolean check(String value) {
      ArrayList<Integer> list = new ArrayList<>();
      for(int i = 0; i < value.length(); i++) {
        if (Character.isUpperCase(value.charAt(i))) {
          list.add(i);
        }
      }
      if (list.size() != 2) {
        return false;
      }
      if (list.get(0) != 0) {
        return false;
      }
      if (list.get(1) < 2 || list.get(1) > value.length() - 2) {
        return false;
      }
      if (!String.valueOf(value.charAt(0)).equals("A")) {
        return false;
      } 
      return String.valueOf(value.charAt(list.get(1))).equals("C");
   }
      
}
