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);
			// 文字列の入力
			String str = sc.next();
			String[] strArray = str.split("");

			int end2 = strArray.length -2;
			if(strArray[0].equals("A")){
			}else{
			    System.out.println("WA");
	    	    return;
			}

			int check = 0;
			for (int i = 2; i <= end2; i++) {
				if(strArray[i].equals("C")){
				    check = i;
				}
			}
			if(check  == 0){
				System.out.println("WA");
    	    	return;
			}
			for (int i = 1; i < strArray.length; i++) {
				if((i != 0)&&(i != check)){
					String temp = strArray[i].toString().toLowerCase();
					if(strArray[i].equals(temp)){
					}else{
						System.out.println("WA");
		    	    	return;
					}
				}
			}
		    System.out.println("AC");
    	    return;
			

		}
}
