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;
using namespace std;
int main()
{
	string s;int sumc=0;
	bool tf1,tf2;
	tf2=1;
	getline(cin,s);
	for(int i=2;i<=s.size()-2;i++){
	    if(s[i]=='C')sumc++;
	    
	}
	for(int i=1;i<=s.size()-1;i++)if(s[i]!='C'&&s[i]>=65&&s[i]<=91)tf2=0;
	if(s[0]=='A'&&tf2&&sumc==1)cout<<"AC";else cout<<"WA";
	
		    
}