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
//2019/3/14
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		String S = sc.next();

		boolean flag = false;

		//最初の文字をチェック
		if(S.charAt(0) != 'A') {

			flag = true;

		}else {

			int C = 0;

			for(int i=2;i<=S.length()-2;i++) {

				if(S.charAt(i) == 'C') C++;

			}

			if(C!=1) flag = true;

			char a = 0;

			for(int i=0;i<S.length();i++) {

				a = S.charAt(i);

				if(!(a=='A' || a=='C' || ((int)a>=97) && (int)a<=122)) flag = true;
			}
		}

		if(flag) System.out.println("WA");

		else System.out.println("AC");
	}

}
