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;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		StringBuilder sb = new StringBuilder();
		char s[] = sc.next().toCharArray();
		boolean b = true;
		int cnt = 0;
		if (s[0] == 'A') {

			for (int i = 1; i < s.length; i++) {
				if (s[i] >= 'a' && s[i] <= 'z') {
				} else if (s[i] == 'C' && i != s.length - 1 && i != 1) {
					cnt++;
					if (cnt > 1) {
						b = false;
						break;
					}
				} else {
					b = false;
					break;
				}
			}

		} else {
			b = false;
		}

		if (b && cnt == 1) {
			System.out.println("AC");
		} else {
			System.out.println("WA");
		}
	}
}
