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[]srgs) {
	Scanner scan=new Scanner(System.in);
	String str=scan.next();
	String ans="AC";
	if(str.charAt(0)!='A') {
		ans="WA";
	}
	int cc=0;
	for(int i=1;i!=str.length();i++) {
		char ch=str.charAt(i);
		if(Character.isUpperCase(ch)) {
			if(ch!='C') {
			ans="WA";
			}
			if(i==str.length()-1) {
				ans="WA";
			}
			if(i==1) {
				ans="WA";
			}
			cc++;
		}
	}
	System.out.println(cc==1?ans:"WA");
}
}