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.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Scanner;
import java.util.Set;

public class Main{


	public static void main(String[] args) {

		Scanner scanner = new Scanner(System.in);
		char[] num = scanner.nextLine().toCharArray();

		String flag = "AC";

		//#1
		if(num[0] != 'A')flag = "WA";

		//#2
		int cnt  = 0;
		for(int i = 2; i < num.length - 1; i++) {

			if(num[i] == 'C') {

				cnt++;
			}else if(Character.isUpperCase(num[i])) {

				flag = "WA";
				break;
			}
		}

		if(Character.isUpperCase(num[1]) || cnt != 1)flag = "WA";
		if(Character.isUpperCase(num[num.length - 1]))flag = "WA";

		System.out.println(flag);



	}
}
