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 J = false;
	if(S[0] == 'A'){
		if(S[1] != 'C' && S[S.size() - 1] != 'C'){
			sort(S.begin(), S.end());
			if(S[1] == 'C' && S[2] >= 'a' && S[2] <= 'z') J = true;
		}
	}
	cout << ((J) ? "AC" :"WA") << endl;
}