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;
  int x=0,N=S.size();
  if(S.at(0)!='A'){
    cout<<"WA"<<endl;
    return 0;
  }
  for(int i=1;i<N;i++){
    if((int)S.at(i)<=90){
      if(S.at(i)=='C' && i>=2 && i<=N-2)
        x++;
      else
        x=2;
    }
  }
  if(x==1)
    cout<<"AC"<<endl;
  else
    cout<<"WA"<<endl;
}