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.Arrays;
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		String s = sc.next();
		String msg = "AC";
		int count = 0;
		int num = 0;

		if (!(s.substring(0, 1).equals("A"))) {
			msg = "WA";
		}

		for (int i = 2; i < s.length() - 1; i++) {
			if (s.substring(i, i + 1).equals("C")) {
				count++;
				if (count > 1) {
					msg = "WA";
					break;
				}
				num = i;
			}
		}
		if (count != 1) {
			msg = "WA";
		}

		for (int i = 1; i < s.length(); i++) {
			if (i == num) {
				continue;
			}
			if (Character.isUpperCase(s.charAt(i))) {
				msg = "WA";
				break;
			}
		}

		System.out.println(msg);

	}
}