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);
        char arr[] = sc.next().toCharArray();
        if(arr[0]!='A'){
            System.out.println("WA");
            return;
        }
        arr[0]='x';
        boolean f= false;
        for(int i=2;i<=arr.length-2;i++){
            if(arr[i]=='C'){
                f= true;
                arr[i] ='x';
                break;
            }
        }
        if(!f){
            System.out.println("WA"); return;
        }
        for(int i=0;i<arr.length;i++){
            if(Character.isUpperCase(arr[i])){
                System.out.println("WA");
                return ;
            }
        }
        System.out.println("AC");
    }
}
