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.Scanner;

class Main {
  public static void main(String[] args) {
    Scanner scanner = new Scanner(System.in);
    String s = scanner.next();

    char[] chars = s.toCharArray();
    if (check(chars)) {
      System.out.println("AC");
    } else {
      System.out.println("WA");
    }
  }

  static boolean check(char[] s) {
    if (s[0] != 'A') return false;
    int numC = 0;
    for (int i = 1; i < s.length; i++) {
      if (i >= 2 && i <= s.length - 2 && s[i] == 'C') {
        numC++;
        continue;
      }
      if (s[i] < 'a' || s[i] > 'z') {
        return false;
      }
    }
    return numC == 1;
  }
}