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".equals(S.substring(0,1)) &&
				(S.substring(1,2).toLowerCase()).equals(S.substring(1,2)) &&
				(S.substring(S.length()-1)).toLowerCase().equals(S.substring(S.length()-1))) {
			for(int i = 2; i < S.length()-1; i++) {
				if("C".equals(S.substring(i,i+1))) {
					if("WA".equals(result)) {
						result = "AC";
					}else {
						result = "WA";
						break;
					}
				}else if(!(S.substring(i,i+1).toLowerCase()).equals(S.substring(i,i+1))) {
					result = "WA";
					break;
				}
			}
		}
		System.out.println(result);
	}
}
