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();

		boolean startsFromA = (S.charAt(0) == 'A');
		String seekC = S.substring(2, S.length() - 1);
		int indexOfC = seekC.indexOf('C');
		boolean containsSingleC = (indexOfC != -1 && seekC.indexOf('C', indexOfC + 1) == -1);
		boolean lowersOtherThanAC = isLowersOtherThanAC(S, indexOfC + 2);
		System.out.println((startsFromA && containsSingleC && lowersOtherThanAC) ? "AC" : "WA");
	}

	private static boolean isLowersOtherThanAC(String S, int indexOfC) {
		char[] array = S.toCharArray();
		int length = array.length;
		for (int i = 1; i < length; i++) {
			if (i != indexOfC && Character.isUpperCase(array[i])) {
				return false;
			}
		}
		return true;
	}
}