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 java.io.*;

public class Main {
    public static boolean solve(String s){
        if(s.charAt(0)!='A')return false;
        if(s.charAt(1)=='C'||s.charAt(s.length()-1)=='C') return false;
        int countC = 0;
        for(int i=1;i<s.length();i++){
        	char ith = s.charAt(i);
        	if((ith<'a'||ith>'z')&&ith!='C')return false;
        	if(ith=='C')countC++;
        }
        return countC==1;
    }
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s = sc.next();
        System.out.println(solve(s) ? "AC" : "WA");
    }
}