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 <cstdio>
# include <iostream>
# include <string>
using namespace std;
int main ()
{
	string s;
	int n,a=0,flag=1;
	cin>>s;
	n=s.length();
	for (int i=0;i<n;++i)
	   {
	   	 if (isupper(s[i]))
	         a++;
	   }
	if (s[0]=='A'&&s[1]!='C'&&s[n-1]!='C'&&a==2)
	  printf ("AC\n");
	else
	printf ("WA\n");	   
}