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) {
		Scanner sc = new Scanner(System.in);
		String st = sc.next();
		boolean ok = true;
		if (st.charAt(0)!='A') ok = false;
		int count=0;
		for (int i=2;i<st.length()-1;i++)
			if (st.charAt(i)=='C') count++;
		if (count!=1) {
			ok = false;
		}
		
		for (int i=1;i<st.length();i++)
			if (st.charAt(i)!='C' && st.charAt(i)!=st.toLowerCase().charAt(i)) {
				ok = false;
			}
		
		if (ok) System.out.println("AC");
		else System.out.println("WA");

	}
}
