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.*;

class Main
{
    public static void main (String[] args)
    {
        Scanner sc = new Scanner(System.in);
        String s = sc.next();

        String ans;

        if(s.charAt(0) != 'A' || s.charAt(1) <= 'Z' || s.charAt(s.length() - 1) <= 'Z') ans = "WA";

        else{
            int c_count = 0;
            int small_count = 0;
            int other = 0;
            for(int i = 2; i < s.length() - 1; i++){
                if(s.charAt(i) == 'C')     c_count++;
                else if(s.charAt(i) <= 'z' && s.charAt(i) >= 'a') small_count++;
                else other++;
            }

            if(c_count == 1 && small_count == s.length() - 4 && other == 0) ans = "AC";
            else ans = "WA";
        }

        System.out.println(ans);
    }
}