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 in = new Scanner(System.in);
		String S =in.next();
		int count=0;
		boolean flag=S.matches("A[a-z][a-z,C][a-z,C]*[a-z]");
		for(int i=0;i<S.length();i++) {
			if(S.charAt(i)=='C') {
				count++;
			}
		}
		if(count>=2||count==0) {
			flag=false;
		}
		if(flag) {
			System.out.println("AC");
		}else {
			System.out.println("WA");
		}
 
	}
}