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 scanner = new Scanner(System.in);
        String S = scanner.nextLine();

        boolean a = true;
        int c = 0;

        if (S.charAt(0)!='A') {
            a = false;
        }

        if (Character.isUpperCase(S.charAt(1))) {
            a = false;
        }
       
        for (int i = 2;i < S.length()-1;i++){
            if (Character.isUpperCase(S.charAt(i))) {
                if (S.charAt(i)=='C') {
                    c++;
                }else{
                    a = false;
                }
            }
        }

        if (Character.isUpperCase(S.charAt(S.length()-1))) {
            a = false;
        }

        if (a && c == 1) {
            System.out.println("AC");
        }else{
            System.out.println("WA");
        }
    }
}