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();

		int frag = 0;
		if (S.charAt(0) == 'A') {
			for (int i = 2; i < S.length() - 1; i++) {
				if (S.charAt(i) == 'C') {
					frag = 1;
					break;
				}
			}
		}
		int cnt = 0;
		for (int i = 0; i < S.length(); i++) {
			if (Character.isUpperCase(S.charAt(i)))
				cnt++;
		}
		if (cnt != 2)
			frag = 0;

		if (frag == 1) {
			System.out.println("AC");
		} else {
			System.out.println("WA");
		}
		sc.close();
	}
}