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 countC = 0;
    for (int i = 0; i < S.length(); i++) {
      char c = S.charAt(i);
      if (i == 0) {
        if (c != 'A') {
          System.out.println("WA");
          return;
        }
      } else if (2 <= i && i <= S.length() - 2 && c == 'C') {
        countC++;
      } else {
        if (!('a' <= c && c <= 'z')) {
          System.out.println("WA");
          return;
        }
      }
    }
    if (countC != 1) {
      System.out.println("WA");
      return;
    }

    System.out.println("AC");
  }
}