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.lang.Math;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    boolean judge = true;
    boolean cex = true;
    
    for(int i = 0; i < s.length() && judge;i++){
      if(i == 0){
      	if(!(s.charAt(i) == 'A')) judge = false;
      }
      else if(i > 1 && i < s.length()-1 && cex){
        if(s.charAt(i) == 'C') cex = false;
        else if((int)s.charAt(i) < 96 || 122 < (int)s.charAt(i)) judge = false; 
      }
      else{
        if((int)s.charAt(i) < 96 || 122 < (int)s.charAt(i)) judge = false;
      }
    }
  	
    if(!cex && judge) System.out.println("AC");
    else System.out.println("WA");
  }
}
