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 st = sc.next();
		boolean flag = true;
		boolean C = false;
		for(int n=1;n<st.length();n++){
				if(!(0<=(st.charAt(n)-'a') &&(st.charAt(n)-'a')<=25)){
					if(!C && st.charAt(n) == 'C' && n!=1 && n!=st.length()-1) C = true;
					else flag = false;
				}
		}
		if(!C) flag = false;

		if(st.charAt(0) == 'A'){
		}else{
			flag = false;
		}

		if(flag) System.out.println("AC");
		else System.out.println("WA");

	}
}