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) {
        Scanner scanner = new Scanner(System.in);
        String S = scanner.nextLine();
        if (S.charAt(0) != 'A') {
            System.out.println("WA");
            return;
        }
        int ccount = 0;
        int cindx = -1;
        for (int i = 2; i < S.length() - 1; i++) {
            if (S.charAt(i) == 'C') {
                cindx = i;
                ccount++;
            }
        }

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

        for (int i = 1; i < S.length(); i++) {
            if (i != cindx) {
                if (Character.isUpperCase(S.charAt(i))) {
                    System.out.println("WA");
                    return;
                }
            }
        }

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