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 f = 0;
    if(!((String.valueOf(s.charAt(0))).equals("A"))) f++;
    int p = 0;
    int q = 0;
    for(int i = 2; i < s.length() - 1; i++) {
      if((String.valueOf(s.charAt(i))).equals("C")) {
        p++;
        q = i;
      }
    }
    if(p != 1) f++;
    for(int i = 1; i < s.length(); i++) {
      if(q != i) {
        String a = (String.valueOf(s.charAt(i))).toLowerCase();
        if(!(a.equals(String.valueOf(s.charAt(i))))) f++;
      }
    }
    String ans = "AC";
    if(f > 0) ans = "WA";
    System.out.println(ans);
  }
}