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();
        char[]ss = S.toCharArray();

        int cou = 0;
        int C = 0;
        for(int i=2; i<S.length()-1; i++) {
        	if(ss[i] == 'C') {
        		C++;
        	}
        }
        for(int i=0; i<S.length(); i++) {
        	if(ss[i]>96) {
        		cou++;
        	}
        }
        
        if(ss[0]=='A' && C==1 && cou==S.length()-2){
            System.out.println("AC");    
        }else{
            System.out.println("WA");
    }
}
}
