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 capital = 0;
  for(int i = 0; i < S.size(); i++){
    if(S[i] >= 'A' && S[i] <= 'Z') capital++;
  }
  int C = 0;
  for(int i = 2; i < S.size() - 1; i++){
    if(S[i] == 'C') C++;
  }
  if(S[0] == 'A' && capital == 2 && C == 1) cout << "AC" << endl;
  else cout << "WA" << endl;
  return 0;
}
