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;
import java.util.stream.IntStream;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        String S = sc.next();

        System.out.println(solve(S) ? "AC" : "WA");

        sc.close();
    }

    static boolean solve(String S) {
        int[] uppercaseIndices = IntStream.range(0, S.length()).filter(i -> Character.isUpperCase(S.charAt(i)))
                .toArray();

        return S.charAt(0) == 'A' && uppercaseIndices.length == 2 && uppercaseIndices[1] >= 2
                && uppercaseIndices[1] <= S.length() - 2 && S.charAt(uppercaseIndices[1]) == 'C';
    }
}