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();
		int L = S.length();
		int Ucount = 0;
		int Ccount = 0;

		for(int i=0; i<L; i++) {
			if(Character.isUpperCase(S.charAt(i))){
				Ucount += 1;
			}
		}

		for(int j=2; j<L-1; j++) {
			if(S.charAt(j) == 'C') {
				Ccount += 1;
			}
		}

		if(Ucount == 2 && Ccount ==1) {
			if(S.charAt(0) == 'A') {
				System.out.println("AC");
			}else {
				System.out.println("WA");
			}
		}else {
			System.out.println("WA");
		}

	}

}
