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 <iostream>
#include <cstring>
using namespace std;
int main(int argc, char *argv[])
{	int c=0,f=0;
	char a[15];
	cin>>a;
	int n=strlen(a);
	for(int i=0;i<n;i++){
		if(i>1&&i<n-1)
		{if(a[i]=='C')c++;}
	 if(a[i]>='A'&&a[i]<='Z')f++;	
	}
	if(c==1&&f==2&&a[0]=='A')cout<<"AC\n";
	else cout<<"WA\n";	
	return 0;
}