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);
    String s = sc.next();
    int c = 0;
    boolean flag = true;
    if(s.charAt(0)!='A'){
      flag = false;
    }
    for(int i=2;i<s.length()-1;i++){
      if(s.charAt(i) == 'C'){
        c++;
      }else if(Character.isUpperCase(s.charAt(i))){
        flag = false;
        break;
      }
    }
    if(Character.isUpperCase(s.charAt(1))){
      flag = false;
    }
    if(Character.isUpperCase(s.charAt(s.length()-1))){
      flag = false;
    }
    if(flag && c==1){
      System.out.println("AC");
    }else{
      System.out.println("WA");
    }
  }
}
