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 sc = new Scanner(System.in);

		String S = sc.next();

		String ans = "AC";

		int c = 0;
		for (int i = 2; i < S.length() - 1; i++) {
			if (S.substring(i, i + 1).equals("C")) {
				c++;
			} else if (Character.isUpperCase(S.charAt(i))) {
				c = 2;
			}
		}

		if (Character.isUpperCase(S.charAt(1)) || Character.isUpperCase(S.charAt(S.length() - 1))
				|| !S.substring(0, 1).equals("A")
				|| S.substring(1, 2).equals("C")
				|| S.substring(S.length() - 1, S.length()).equals("C") || c != 1) {
			ans = "WA";
		}

		System.out.println(ans);
		sc.close();
	}

}
