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.IOException;
import java.io.InputStreamReader;

public class Main {

	public static void main(String[] args) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String sb =br.readLine();

		if(sb.charAt(0) != 'A') {
			System.out.println("WA");
			return;
		}

		if(sb.indexOf("C") > 1 && sb.indexOf("C") < sb.length()-1) {

		}else {
			System.out.println("WA");
			return;
		}



		sb = sb.replaceFirst("A", "");
		sb = sb.replaceFirst("C", "");


		if(sb.matches("[a-z]+")) {
			System.out.println("AC");
		}else {
			System.out.println("WA");
		}

	}

}
