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.next();

		if (s.charAt(0) != 'A'){
			System.out.println("WA");
			return;
		}
		int cCnt = 0;
		int cIndex = 0;
		for (int i = 2; i < s.length() -1; i++){
			char c = s.charAt(i);
			if (c == 'C'){
				cCnt++;
				cIndex = i;
			}
		}
		if (cCnt != 1){
			System.out.println("WA");
			return;
		}
		for (int i = 1; i < s.length(); i++){
			if (i != cIndex){
				if (!Character.isLowerCase(s.charAt(i))){
					System.out.println("WA");
					return;
				}
			}
		}
		System.out.println("AC");
	}
}