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;
	bool flag = true;
	
	int cnt = 0;
	for(int i=0; i<s.size(); i++){
		if(s[0]!='A') flag = false;
		if(i>=2 && i<=s.size()-2 && s[i]=='C') cnt++;
		if(i!=0 && s[i]!='C' && isupper(s[i])) flag = false;
	}
	
	if(flag && cnt==1) cout << "AC" << endl;
	else cout << "WA" << endl;
	
	
	return 0;
}