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 ans=1;
  ans*=(s.at(0)=='A');
  int x=0;
  int y;
  for(int i=2;i<s.size()-1;i++){
    if(s.at(i)=='C') {x++; y=i;}
  }
  ans*=(x==1);
  for(int i=1;i<s.size();i++){
    int a=s.at(i);
    if(i!=y) ans*=(a>96);
  }
  
  if(ans) cout << "AC" << endl;
  else cout << "WA" << endl;
}