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 r = sc.nextLine();
		char[] s = r.toCharArray();
		String ans = "AC";
		int i;
		int c=0;
		if((s[0]!='A')||(Character.isUpperCase(s[1]))) {
			ans = "WA";
		}else {
			for(i=2;i<r.length()-1;i++) {
				if(Character.isUpperCase(s[i])) {
					if(s[i]!='C') {
						ans = "WA";
						break;
					}else {
						c++;
						if(c>1) {
							ans ="WA";
							break;
						}
					}
				}
			}
			if(c!=1) {
				ans="WA";
			}else if(Character.isUpperCase(s[r.length()-1])) ans = "WA";
		}
		System.out.println(ans);

	}
}