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 sc = new Scanner(System.in);
        
        String s = sc.next();
		
		if(s.charAt(0)!='A'){
		    System.out.println("WA");
		    return;
		}
		
		int ccount=0;
		int cnum=0;
		for(int i=2; i<s.length()-1; i++){
		    if(s.charAt(i)=='C'){
		        ccount++;
		        cnum=i;
		    }
		}
		
		if(ccount!=1){
		    System.out.println("WA");
		    return;
		}
		
		for(int i=1; i<s.length(); i++){
		    if(i!=cnum){
		        if(Character.isUpperCase(s.charAt(i))){
		            System.out.println("WA");
		            return;
		        }
		    }
		}
		
		System.out.println("AC");
		return;
    }
}
