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;

public class Main {

	public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ

		Scanner scannerS = new Scanner(System.in);
		String s = scannerS.nextLine();

		char s0 = s.charAt(0);
		String ss = s.substring(2, s.length() - 1);
		char sl[] = s.toCharArray();
		int lower = 0;


		for (int i = 0; i < s.length(); i++) {
			if (sl[i] <= 'z' && sl[i] >= 'a')
				lower++;
		}
		//      System.out.println(lower);

		//	    System.out.println(ss);


		int count = 0;
		for (int i = 0; i < ss.length(); i++) {
			if (ss.charAt(i) == 'C')
				count++;
		}

		//	    System.out.println(count);

		if (s0 == 'A' && count == 1 && lower==s.length()-2) {
			System.out.println("AC");
		}else {
			System.out.println("WA");
		}

	}

}