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 scan = new Scanner(System.in);
		String S = scan.next();
		scan.close();

		if(!S.startsWith("A")) {
			System.out.println("WA");
			return;
		}
		if(S.substring(2, S.length()-1).indexOf("C")<0) {
			System.out.println("WA");
			return;
		}
		String s = S.toLowerCase();
		int w = 0;
		for(int i=0; i<s.length(); i++) {
			if(S.charAt(i) != s.charAt(i)) {
				w++;
			}
		}
		if(w==2) {
			System.out.println("AC");
		} else {
			System.out.println("WA");
		}
	}

}
