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 str = scan.nextLine();

		char[] charArray = new char[str.length()];
		for (int i = 0; i < str.length(); i++) {
			charArray[i] = str.charAt(i);
		}
		if (charArray[0] != 65) {
			System.out.println("WA");
		} else if (Character.isUpperCase(charArray[1])) {
			System.out.println("WA");

		} else {
			int count = 0;
			for (int i = 2; i < str.length() - 1; i++) {
				if (charArray[i] == 67) {
					count++;
				}
			}
			if (count == 1) {
				if (charArray[str.length() - 1] != 67 && Character.isLowerCase(charArray[str.length() - 1])) {
					System.out.println("AC");
				} else {
					System.out.println("WA");
				}
			} else {
				System.out.println("WA");
			}

		}

	}
}