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;
  int n,i,p=0,c=0;
  cin>>s;
  n=s.length();
  if(s.at(0)!='A') cout<<"WA"<<endl;
  else{
    for(i=1;i<n;i++){
      if('A'<=s.at(i)&&s.at(i)<='Z'){
        c++;
        if(s.at(i)=='C') p=i+1;
      }
    }
    if(c==1&&3<=p&&p<=n-1) cout<<"AC"<<endl;
    else cout<<"WA"<<endl;
  }
}