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 S = scanner.nextLine();
		scanner.close();

		int count = 0;
		for (int n = 0; n < S.length(); n++) {
			String c = S.substring(n, n + 1);

			if (n == 0) {
				if (!c.equals("A")) {
					System.out.println("WA");
					return;
				}
				continue;
			}

			if (n == 1 || n == S.length() - 1) {
				if (!c.equals("A") && Character.isUpperCase(S.charAt(n))) {
					System.out.println("WA");
					return;
				}
				continue;
			}

			if (c.equals("C") && count == 0) {
				count++;
				continue;
			}

			if (Character.isUpperCase(S.charAt(n))) {
				System.out.println("WA");
				return;
			}
		}
		if (count == 0) {
			System.out.println("WA");
			return;
		}
		System.out.println("AC");
	}
}
