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);

        String S = sc.nextLine();
        boolean ret = true;

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

        int cCount = 0;
        for (int i = 2; i < S.length() - 1; i++) {
            if (S.charAt(i) == 'C') cCount++;
        }
        if (cCount != 1) ret = false;

        int upperCount = 0;
        for (int i = 0; i < S.length(); i++) {
            if (Character.isUpperCase(S.charAt(i))) upperCount++;
        }
        if (upperCount != 2) ret = false;

        if (ret) {
            System.out.println("AC");
        } else {
            System.out.println("WA");
        }
    }
}