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<algorithm>
#include<string>
using namespace std;

int main(){
  string S;cin>>S;int a=0,b=0,c=0;
  if(S[0]=='A')a=1;
  for(int i=2;i<S.size()-1;i++){
      if(S[i]=='C')b++;
  }
  for(int i=0;i<S.size();i++){
    if(96<S[i])c++;
  }
  if(a==1&&b==1&&c==S.size()-2)cout<<"AC"<<endl;
  else cout<<"WA"<<endl;
}