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.*;

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.charAt(0) != 'A') ans = "WA";

		for(int i = 1; i < S.length(); i++){
			if(S.charAt(i) < 'a'){
				if(i == 1 || i == S.length() -1){
					ans = "WA";
				} else if(S.charAt(i) == 'C'){
				}
				cnt++;
			}
		}
		if(cnt != 1) ans = "WA";
		
		
			System.out.println(ans);

	}

}