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 {

	@SuppressWarnings("resource")
	public static void main(String args[]) {
		Scanner scanner = new Scanner(System.in);
		String s = scanner.next();
		
		if(s.charAt(0)!='A') {
			System.out.println("WA");
			return;
		}
		
		int cnt=0;
		for(int i=2;i<=s.length()-2;i++) {
			if(s.charAt(i)=='C')cnt++;
		}
		if(cnt!=1) {
			System.out.println("WA");
			return;
		}
		
		cnt=0;
		for(int i=0;i<s.length();i++) {
			if(Character.isUpperCase(s.charAt(i)))cnt++;
		}
		if(cnt!=2) {
			System.out.println("WA");
			return;
		}
		
		System.out.println("AC");
	}
}