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.Arrays;
import java.util.Scanner;

class Main {

    private static Scanner sc = new Scanner(System.in);

    public static void main(String[] args) {
        String s = sc.next();
        int idx = 0;
        for (int i = 2; i < s.length() - 1; i++) {
            if (s.charAt(i) == 'C') {
                idx = i;
                break;
            }
        }
        boolean allLower = true;
        for (int i = 1; i < s.length(); i++) {
            if(i != idx && s.charAt(i) < 97) {
                allLower = false;
            }
        }
        if (s.charAt(0) == 'A' && idx != 0 && allLower) {
            System.out.println("AC");
        } else {
            System.out.println("WA");
        }
    }
}