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;
import java.util.stream.IntStream;

public class Main {

	public static void main(String[] args) {
		try (Scanner scanner = new Scanner(System.in)) {
			char[] s = scanner.next().toCharArray();
			boolean result = true;
			if ('A' != s[0]) {
				// 最初の文字が'A'でない
				result = false;
			} else if (1 != IntStream.rangeClosed(2, s.length - 2).filter(i -> 'C' == s[i]).count()) {
				// 3文字目から最後から2文字まで'C'の数が1でない
				result = false;
			} else if (2 != IntStream.range(0, s.length).filter(i -> ('A' <= s[i]) && (s[i] <= 'Z')).count()) {
				// 最初の'A'と'C'以外はすべて小文字でない
				result = false;
			}
			System.out.println(result ? "AC" : "WA");
		}
	}
}
