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();
		if (s.charAt(0)!='A') {
			System.out.println("WA");
			return ;
		}
		int count =0;
		for (int i=2;i<s.length()-1;i++) {
			if (s.charAt(i)=='C') {
				count ++;
			}
		}
		if (count!=1) {
			System.out.println("WA");
			return ;
		}
		for (int i=1;i<s.length();i++) {
			if (s.charAt(i)!='C'&&(s.charAt(i)<'a'||s.charAt(i)>'z')) {
				System.out.println("WA");
				return ;
			}
			if (s.charAt(i)=='C') {
				if (i==1||i==s.length()-1) {
					System.out.println("WA");
					return ;
				}
			}
		}
		System.out.println("AC");
		return ;
	}
}