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;
	int cnt=0;
	bool a=true;
	for(int i=2;i<s.size()-1;++i){
		if(s.at(i)=='C') cnt++;
	}
	for(int i=1;i<s.size();++i){
		int x=s.at(i)-'a';
		if(s.at(i)!='C' && x<0) a=false;
	}
	if(s.at(0)=='A' && cnt==1 && a) cout << "AC" << endl;
	else cout << "WA" << endl;
}