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
#include <bits/stdc++.h>

using namespace std;

int n, cnt;
char x[1005];

int main() {
	scanf("%s", x);
	n = strlen(x);
	for (int i = 2; i < n - 1; i++)
		cnt += x[i] == 'C';
	cnt *= x[0] == 'A';
	for (int i = 1; i < n; i++)
		if (x[i] != 'C' && x[i] <= 'Z')
			cnt = 0;
	printf(cnt == 1 ? "AC\n" : "WA\n");
	return 0;
}
