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>;
using namespace std;
int main() {
	int a=0, c=0,k=0;
	string s;
	cin >> s;
	if (s[0] == 'A') { a = 1; }
		for (int i = 2; i < s.length()-1; i++) {
			if (s[i] == 'C') {
				c++;
			}
		}
		for (int j = 0; j < s.length() ; j++) {
			if (isupper(s[j])) {
				k++;
			}
		}
	
	if (a==1 && c == 1 && k==2 ) { cout << "AC"; }
	else { cout << "WA"; }
	return 0; }