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.util.ArrayList;
import java.util.Collections;

public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String s = sc.next();
        int flag = 1;
        if(s.charAt(0) != 'A'){
            flag = 0;
        }
        int countc = 0;
        for(int i = 2; i <= s.length()-2; i++){
            if(s.charAt(i) == 'C'){
                countc++;
            }
        }
        if(countc != 1){
            flag = 0;
        }
        if(s.charAt(1) <= 'Z' || s.charAt(s.length()-1) <= 'Z'){
            flag = 0;
        }
        if(flag == 1){
            System.out.print("AC");
        } else {
            System.out.print("WA");
        }
    }
}