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.*;
 
public class Main{
	public static void main(String[] args){
    	Scanner sc = new Scanner(System.in);
        String s = sc.next();
        int count = 0;
        int komoji = 0;
        if(!(Character.isUpperCase(s.charAt(1)))){
        	komoji++;
            if(!(Character.isUpperCase(s.charAt(s.length() - 1)))){
            	komoji++;
            }
        }
        for(int i = 2; i < s.length() - 1; i++){
        	if(s.charAt(i) == 'C'){
            	count++;
            }else if(!(Character.isUpperCase(s.charAt(i)))){
            	komoji++;
            }
        }
        if(s.charAt(0) == 'A' && count == 1 && komoji == s.length() - 2){
        	System.out.println("AC");
        }else{
        	System.out.println("WA");
        }
    }
}