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