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();
        
        boolean ac = true;
        
        if(s.charAt(0) != 'A') ac = false;
        
        int c = 0;
        int index = 0;
        for(int i = 2; i <= s.length()-2; i++){
            if(s.charAt(i) == 'C'){
                c++;
                index = i;
            }
        }
        if(c != 1) ac = false;
        
        for(int i = 1; i < s.length(); i++){
            if(i == index) continue;
            if(!('a' <= s.charAt(i) && s.charAt(i) <= 'z')){
                ac = false;
            }
        }
        
        if(ac){
            System.out.println("AC");
        }else{
            System.out.println("WA");
        }
    }
}