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.*;
import java.lang.*;
class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        char[] s = sc.next().toCharArray();
        String ans = "AC";
        if(s[0]!='A'){
            ans = "WA";
        }
        if(Character.isUpperCase(s[1])){
            ans = "WA";
        }
        int count = 0;
        for(int i =2;i<s.length;i++){
            if(Character.isUpperCase(s[i])){
                if(count==0&&s[i]=='C'&&i!=s.length-1){
                    count ++;
                } else {
                    ans = "WA";
                }
            }
        }
        if(count==0){
            ans ="WA";
        }
        System.out.println(ans);
    }
}