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>
#include <string>
using namespace std;

int main(){
  string s;
  cin >> s;
  bool flag=(s[0]=='A');
  if(s[1]<'a')flag=false;
  int c=0;
  for(int i=2; i<s.length()-1; i++){
    if(s[i]=='C')c++;
    else if(s[i]<'a')flag=false;
  }
  if(c!=1)flag=false;
  if(s[s.length()-1]<'a')flag=false;
  if(flag)cout << "AC";
  else cout << "WA";
  return 0;
}
