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{

	static char[][] map;
	static int H;
	static int W;

	public static void main(String[] args) {



		Scanner sc = new Scanner(System.in);			//文字の入力
		String string = sc.next();
		if(string.charAt(0) != 'A'){
			System.out.println("WA");
			return;

		}
		int c = 0;
		for(int i= 2;i < string.length()-1;i++){
			if(string.charAt(i) == 'C'){
				c++;
			}
		}
		for(int i = 1;i < string.length()-1;i++){
			if(Character.isUpperCase( string.charAt(i)) && string.charAt(i) != 'C'){
				System.out.println("WA");
				return;

			}
		}


		if(c != 1){
			System.out.println("WA");
			return;

		}

		if(Character.isUpperCase( string.charAt(string.length()-1) )){

			System.out.println("WA");
			return;

		}
		System.out.println("AC");


	}
}



