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.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
      	//数値の入力
		String s = sc.next();
      	int count =0;
      	int lowerCase =0;
      	for (int i = 0; i < s.length(); i++) {
			if (Character.isLowerCase(s.charAt(i))) {
              lowerCase++;
            }
          }
      	for (int i = 2; i < s.length() - 1; i++){
          if(s.charAt(i) == 'C'){
            	count++;
      	}
        }
          if((s.charAt(0) == 'A') && (lowerCase == s.length()-2) && count==1){
          	System.out.println("AC");
          }else{
            System.out.println("WA");
          }
    }
}