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 <iostream>
#include <string>

using namespace std;

int main()
{
	string S;
	cin >> S;

	int L = S.size();
	string ans = "AC";

	if (S[0] != 'A') {
		ans = "WA";
	}
	int cnt = 0;
	for (int i = 1; i < L; i++) {
		if (isupper(S[i])) {
			if (i == 1 || i == L - 1 || S[i] != 'C') {
				ans = "WA";
			}
			++cnt;
		}
	}
	if (cnt != 1) {
		ans = "WA";
	}
	cout << ans << endl;
}