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>
using namespace std;

int main(){
  string S;
  cin >> S;
  int a = 0;
  for(int i = 2; i < S.size()-1; i++){
    if(S.at(i) == 'C'){
      a++;
    }
  }

  int b = 0;
  for(int i = 0; i < S.size(); i++){
    if(isupper(S.at(i))){
      b++;
    }
  }

  if(S.at(0) == 'A'  && a == 1 && b == 2){
    cout << "AC";
  }else{
    cout << "WA";
  }
  return 0;
}
