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 cnt = 0;

		if (!s.startsWith("A")) {
			ans = "WA";
		} else {
			for (int i = 1; i < s.length(); i++) {
				if (i == 1) {
					if (Character.isUpperCase(s.substring(i).charAt(0))) {
						ans = "WA";
						break;
					}
				} else if (i > 1 && i < s.length() - 1) {
					if (s.substring(i, i + 1).equals("C")) {
							cnt++;
					}
				} else {
					if (Character.isUpperCase(s.substring(i).charAt(0))) {
						ans = "WA";
						break;
					} else if (cnt != 1) {
						ans = "WA";
						break;
					}
				}
			}
		}
		System.out.println(ans);

		sc.close();
	}
}
