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{
	static boolean check(String s) {
		if(s.charAt(0) != 'A') return false;
		if(s.substring(2, s.length() - 1).indexOf('C') != s.substring(2, s.length() - 1).lastIndexOf('C') || s.substring(2, s.length() - 1).indexOf('C') == -1) {
			return false;
		}
		char[] str = s.toCharArray();
		str[0] = 'a';
		str[s.substring(2, s.length() - 1).indexOf('C') + 2] = 'c';
		return String.valueOf(str).equals(s.toLowerCase());
	}
	static long mod = 1000000007;
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		String S = sc.next();
		if(check(S)) {
			System.out.println("AC");
		}else {
			System.out.println("WA");
		}
	}
}
