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 result = "WA";
		if ('A' == (S.charAt(0))) {
			for (int i = 1; i < S.length(); i++) {
				if ('C' == S.charAt(i)) {
					if ("WA".equals(result) && i != 1 && i != S.length()-1) {
						result = "AC";
					} else {
						result = "WA";
						break;
					}
				} else if (!(String.valueOf(S.charAt(i)).toLowerCase()).equals(String.valueOf(S.charAt(i)))) {
					result = "WA";
					break;
				}
			}
		}
		System.out.println(result);
	}
}
