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 scanner = new Scanner(System.in);
		String input = scanner.next();
		scanner.close();

		if(input.toCharArray()[0] != 'A') {
			System.out.print("WA");
			return;
		}
		if(input.toCharArray()[1] == 'C') {
			System.out.print("WA");
			return;
		}
		if(input.toCharArray()[input.length() - 1] == 'C') {
			System.out.print("WA");
			return;
		}
		if(input.replaceAll("C","").length() == input.length()) {
			System.out.print("WA");
			return;
		}
		if(input.replaceAll("C","").length() < input.length() - 1) {
			System.out.print("WA");
			return;
		}
		if(!input.toLowerCase().equals(input.replaceAll("A","a").replaceAll("C","c"))) {
			System.out.print("WA");
			return;
		}
		System.out.print("AC");
	}
	
}