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 n = s.size();
	string ans = "AC";
	if (s[0] != 'A') {
		ans = "WA";
	}
	int cnt = 0;
	for (int i = 1;i < n;++i) {
		if (isupper(s[i])) {
			if (i == 1 || i == n - 1 || s[i] != 'C') {
				ans = "WA";
			}
			++cnt;
		}
	}
	if (cnt != 1) {
		ans = "WA";
	}
	cout << ans << endl;
}