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.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader input = new BufferedReader(new InputStreamReader(System.in));
        String word = input.readLine();

        boolean state = true;

        state &= word.charAt(0) == 'A';
        boolean foundC = false;

        for (int i = 1; i < word.length(); i++) {
            if (!foundC && i >=2 && i <= word.length() -2 && word.charAt(i) == 'C'){
                foundC = true;
            }else if (!Character.isLowerCase(word.charAt(i))){
                state = false;
                break;
            }
        }

        if (foundC && state)
            System.out.println("AC");
        else
            System.out.println("WA");
    }
}
