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 scan = new Scanner(System.in);
		String s = scan.next();
		char[] c = new char[s.length()];
		for (int i = 0; i < s.length(); i++) {
			c[i] = s.charAt(i);
		}
		boolean f = false;
		if (c[0] != 'A' ||Character.isUpperCase(s.charAt(s.length()-1)) || Character.isUpperCase(s.charAt(1))) {
			System.out.println("WA");
			return;
		}
		int U = 0;
		for (int i = 2; i < s.length()-1; i++) {
			if (Character.isUpperCase(s.charAt(i))) {
				U++;
			}
			if (c[i] == 'C') f = true;
		}
		if (U == 1 && f == true) {
			System.out.println("AC");
		} else {
			System.out.println("WA");
		}
	}
}
