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;
string s;
int n, c, k;
int main() {
	cin>>s;
	n = s.size();
	for(int i=0; i<n; i++) {
		if(s[i]>='a') c++;
		if(s[i]=='C') k = i+1;
	}
	if(c==n-2 && s[0]=='A' && k>=3 && k<n) cout<<"AC";
	else cout<<"WA";
	return 0;
}