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(void)
{
	string s;
	int ccnt=0;
	bool jud=false,font=true;;

	cin>>s;

	if(s[0]=='A'){
		for(int i=1;i<s.size();i++){
			if(isupper(s[i])){
				if(s[i]!='C'||i==1||i==s.size()-1) font=false;
				else ccnt++;
			}
		}
	}

	if(ccnt==1) jud=true;

	if(jud&&font) cout<<"AC"<<endl;
	else cout<<"WA"<<endl;

	return 0;
}
