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.nextLine();

		boolean match = true;
		String s;
		match = match && S.substring(0, 1).equals("A");
		int cntC = 0;
		for (int i = 1; i < S.length(); i++) {
			s = S.substring(i, i + 1);

			if (i >= 2 && i < S.length() - 1) {
				if (s.equals("C")) {
					cntC++;
				}
			}
			if (!s.equals("C")) {
				match = match && s.matches("[a-z]");
			}
		}
		match = match && cntC == 1;
		System.out.println(match ? "AC" : "WA");
	}

}
