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.lang.reflect.Array;
import java.util.*;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		// 入力
		String S = sc.next();
		String ans = "";
		if (!S.substring(0,1).equals("A")) {
			System.out.println("WA");
			return;
		}
		int C = 0;
		for (int i = 2; i < S.length()-1; i++) {
			if(S.charAt(i) == 'C'){
				C++;
			}
		}
		if(C!=1){
			System.out.println("WA");
			return;
		}
		if (ans.equals("wa")) {
			return;
		}
		String s = S.substring(1,S.length()).replace('C', 'c');
		if(!s.equals(s.toLowerCase())){
			System.out.println("WA");
			return;
		}
		System.out.println("AC");
	}	
}
