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.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		String s = scanner.next();
		String sub = s.substring(2,s.length()-1);

		if (s.startsWith("A") && sub.contains("C") && sub.indexOf('C')==sub.lastIndexOf('C')){
			int idxC = sub.indexOf('C')+2;
			for (int i=1;i<s.length(); i++){
				if (i==idxC) continue;
				if (Character.isUpperCase(s.charAt(i))) {
					System.out.println("WA");
					System.exit(0);
				}
			}
			System.out.println("AC");
		}else {
			System.out.println("WA");
		}
	}
}