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 str = sc.nextLine();
		int L = str.length();
		int cnt = 0;

		boolean check = true;
		
		for (int i = 0; i < L; i++) {
			if ( i == 0) {
				if(str.charAt(i) != 'A') {
					check = false;
				}
			}
			else if( 2 <= i && i <= L - 2) {
				if (str.charAt(i) == 'C') {
					cnt++;
				}
				else if( 'A'<= str.charAt(i) && str.charAt(i) <= 'Z' ) {
					check = false;
				}
			}
			else {
				if('A'<= str.charAt(i) && str.charAt(i) <= 'Z')
					check = false;
			}
	}
		if (cnt != 1) {
			check = false;
		}
		
		if(check) {
			System.out.println("AC");
		}
		else {
			System.out.println("WA");
		}
}
}
