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 S = sc.nextLine();
		int flagA = 0;
		int flagC = 0;
		int flag = 1;
		for(int i = 0; i < S.length(); i++) {
			//System.out.println("test");
			if(S.charAt(i) == 'A' && i == 0) {
				flagA = 1;
				continue;
			}
			if(i >= 2 && i <= S.length() - 2 && S.charAt(i) == 'C') {
				if(flagC == 0) {
					flagC = 1;
					continue;
				} else {
					flagC = -1;
					continue;
				}
			}
			if(Character.isUpperCase(S.charAt(i))) {
				flag = -1;
			}
		}
		if(flagA == 1 && flagC == 1 && flag == 1) {
			System.out.println("AC");
		} else {
			System.out.println("WA");
		}
	}
}