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;

class Main {
    public static void main(String[] args) {
        String s;
        try (Scanner cin = new Scanner(System.in)) {
            s = cin.next();
        }
        int cindex = s.indexOf('C');
        if (s.startsWith("A") && cindex > 1 && cindex < s.length() - 1) {
            for (int i = 1; i < s.length(); i++) {
                if (i != cindex && !Character.isLowerCase(s.charAt(i))) {
                    System.out.println("WA");
                    return;
                }
            }
            System.out.println("AC");
            return;
        }

        System.out.println("WA");
    }
}