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 count=0,check=0;
    if (S.charAt(0) == 'A') {
      for (int i=2; i<S.length()-1; i++) {
        if(S.charAt(i) == 'C') count++;
      }
      for (int i=0; i<S.length(); i++) {
        if(S.charAt(i) >= 'a' && S.charAt(i) <= 'z') check++;
      }
    }
    if (count == 1 && check == S.length()-2) {
      System.out.println("AC");
    } else {
      System.out.println("WA");
    }
  }
}