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.io.BufferedReader;
import java.io.InputStreamReader;

public class Main {
	public static void main(String[] args) throws Exception {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		char[] s = br.readLine().toCharArray();
		br.close();

		if (s[0] != 'A') {
			System.out.println("WA");
			return;
		}

		int cnt = 0;
		for (int i = 2; i < s.length - 1; i++) {
			if (s[i] == 'C') {
				cnt++;
			}
		}
		if (cnt != 1) {
			System.out.println("WA");
			return;
		}

		for (int i = 1; i < s.length; i++) {
			if (s[i] != 'C') {
				int x = s[i] - 'a';
				if (x < 0 || 26 <= x) {
					System.out.println("WA");
					return;
				}
			}
		}
		System.out.println("AC");
	}
}
