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.Scanner;

public class Main{
    public static void main(String[] args){
	Scanner sc = new Scanner(System.in);
	String S = sc.next();
	boolean result = false;
	int count=0;
	int cc = -1;
	for(int i=2;i<S.length()-1;i++){
	    if(S.charAt(i) == 'C'){
		result=true;
		count++;
		cc = i;
	    }
	}
	if(S.charAt(0)!='A') result=false;

	if(count != 1){
	    result = false;
	}else if(cc != -1){
	    for(int i=1;i<S.length();i++){
		if(i!=cc){
		    if(Character.isUpperCase(S.charAt(i)))
			result = false;
		}
	    }
	}
	if(result) System.out.print("AC");
	else System.out.print("WA");
    }
}
