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.*;
import static java.lang.Math.*;
import java.math.BigInteger;

public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		// 入力
		String s = sc.next();
		
		// 計算
		String result = "AC";
		if(s.charAt(0) != 'A') result = "WA";
		boolean flg = false;
		for(int i = 1; i < s.length(); i++){
		    if(Character.isUpperCase(s.charAt(i))){
		        if(i >= 2 && s.length()-2 >= i && s.charAt(i) == 'C' && !flg){
		            flg = true;
		        }else{
		            result = "WA";
		        }
		    }
		}
		if(!flg) result = "WA";
		
		// 出力
		System.out.println(result);
	}
}
