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.*;
 
public class Main {
	
    public static void main(String[] args) {
    	Scanner sc = new Scanner(System.in);
    	char[] S = sc.next().toCharArray();
    	String ans = "AC";
    	boolean check = true;
    	for (int i = 0; i < S.length; i++) {
    		if (i == 0) {
    			if (S[0] != 'A') ans = "WA";
    		} else if (1 < i && i < S.length-1 && check) {
    			if (S[i] == 'C') check = false;
    		} else {
    			if (S[i] < 97) ans = "WA";
    		}
    	}
    	System.out.println(check ? "WA" : ans);
    }
}