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 sc = new Scanner(System.in);
		String S = sc.nextLine();

		boolean flag = true;

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

			if(i == 0) {
				if(S.charAt(0) != 'A') {
					flag = false;
					break;
				}
			}else if(i >= 2 && i < S.length() - 1) {
				if(S.charAt(i) == 'C') {
					c++;
				}else if(Character.isUpperCase(S.charAt(i))) {
					flag = false;
					break;
				}
			}else {
				if(Character.isUpperCase(S.charAt(i))) {
					flag = false;
					break;
				}
			}
		}

		if(c != 1) flag = false;

		if(flag) {
			System.out.println("AC");
		}else {
			System.out.println("WA");
		}
	}

}
