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 n;
string s;

int main()
{
   cin >> s;
   bool val = 1;
   if(s[0]!='A') val=0;
   int c=0;
   for(int i=1;i<s.size();i++)
   {
      if(i>1 && i+1<(int)s.size() && s[i]=='C') c++;
      else if(s[i]>='A' && s[i]<='Z') val=0;
   }
   if(c!=1) val=0;
   if(val) printf("AC\n");
   else printf("WA\n"); 
 	return 0;
}
