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 a=0;
  int s=S.size();
  if(S.at(0)=='A'){a++;}
  for(int i=2;i<s-1;i++){
    if(S.at(i)=='C'){
      a++;
      break;}
  }
  int b=0;
  for(int i=1;i<s;i++){
    if(S.at(i)<='Z'){b++;}
  }
  if(b==1){a++;}
  if(a==3){cout << "AC" << endl;}
  else{cout << "WA" << endl;}
}