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;
signed main(){
  int a=0,b=1,r=0,n=0;
  string c;
  cin>>c;
  if(c[0]=='A') a=1;
  if(a){
    for(int i=1;i<c.size();i++){
      if(c[i]=='C'&&i!=1&&i!=c.size()-1) r++;
      else if(c[i]<'a') b=0;
    }
    if(r==1) n=1;
  }
  
  if(n&a&b) cout<<"AC";
  else cout<<"WA";
  cout<<"\n";
}
