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();
    String ans = "AC";
    if (s.charAt(0) != 'A') ans = "WA";
    int c_count = 0;
    for (int i = 1; i < s.length(); i++) {
      if (Character.isUpperCase(s.charAt(i))) { // 大文字なら
        if (i == 1 || i == s.length() - 1) {
          ans = "WA";
        } else if (s.charAt(i) != 'C') {
          ans = "WA";
        } else if (s.charAt(i) == 'C') {
          c_count++;
        }
      }
    }
    if (c_count != 1) ans = "WA";
    System.out.println(ans);
  }
}