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 main() {
	string s;
	cin >> s;
	int b = s[0] == 'A'&&s[1] >= 'a'&&s.back() >= 'a';
	int c = 0, a = 0;
	for (int i = 2; i + 1 < s.length(); i++) {
		if (s[i] == 'C') c++;
		if (s[i] < 'a') a++;
	}
	cout << (b&&c == 1 && a == 1 ? "AC" : "WA") << endl;
	return 0;
}
