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;
	bool isAC = s[0] == 'A';

	int n = s.size(), c = 0;
	for (int i = 2; i < n - 1; i++) {
		if (s[i] == 'C')
			c++;
	}

	for (int i = 1; i < n; i++) {
		if (s[i] != 'A' && s[i] != 'C' && (s[i] < 'a' || s[i] > 'z')) {
			isAC = 0;
			break;
		}
	}

	cout << (isAC && c == 1 ? "AC" : "WA") << endl;
}
