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.next();

        if (s.charAt(0) != 'A') {
            System.out.println("WA");
            return;
        }

        int c = 0;
        for (int i = 2; i <= s.length() - 2; i++) {
            if (s.charAt(i) == 'C') {
                c++;
            }
        }

        if (c != 1) {
            System.out.println("WA");
            return;
        }

        for (int i = 0; i < s.length(); i++) {
            char c1 = s.charAt(i);
            if (c1 == 'A' || c1 == 'C') {
                continue;
            }

            if ((c1 >= 'a') && (c1 <= 'z')) {

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

    }
}
