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();
	boolean isok = true;
	if(s.length()<4) {
	    System.out.println("WA");
	    return;
	}
	if(s.charAt(0) != 'A') {
	    System.out.println("WA");
            return;
	}
	String miniS = s.substring(2, s.length()-1);
	String ms = miniS.replace("C", "");
	if(miniS.length() - ms.length() != 1) {
	    System.out.println("WA");
            return;
	}
	String lowcase = s.charAt(1) + ms.substring(0, ms.length()) + s.charAt(s.length()-1);
	if(!lowcase.equals(lowcase.toLowerCase())) {
	    System.out.println("WA");
            return;
	}
	System.out.println("AC");
    }
}