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);
		// 文字列の入力
		String input = sc.next();
if(input.charAt(0) != 'A'){
System.out.println("WA");
return;
}
int ccount = 0;
int cposition = 0;
for(int i = 2; i < input.length()-1;++i){
if(input.charAt(i) == 'C'){
ccount++;
cposition = i;
}
}
if(ccount != 1){
System.out.println("WA");
return;
}
String trimStr = input.substring(1, cposition) + input.substring(cposition + 1);
if(trimStr.equals(trimStr.toLowerCase()))
System.out.println("AC");
else
System.out.println("WA");

	}
}