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) throws Exception {
        Scanner scn = new Scanner(System.in);
		String s = scn.next();
      	int check = 0;
		if (s.charAt(0) != 'A') {
			check = 1;
		}
      	if (s.charAt(1) == 'C') {
			check = 1;
		}
		int count =0;
		for (int i=2;i<s.length()-1; ++i) {
			if (s.charAt(i)=='C') {
				count = count + 1;
			}
		}
		if (count != 1) {
			check = 1;
		}
		for (int i=1;i<s.length(); ++i) {
			if (s.charAt(i)!='C' && (s.charAt(i)<'a' || s.charAt(i)>'z')) {
				check = 1;
			}
		}
      if(check == 0){
		System.out.println("AC");
      }else{
        System.out.println("WA");
      }
	}
}
