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,cnt,e;
  ans=0;
  cnt=0;
  e=s.size();
  for(int i=2;i<=e-2;i++) {
    if(s.at(i)=='C') {
      ans++;
    }
  }
  for(int i=0;i<e;i++) {
    if(isupper(s.at(i))) {
      cnt++;
    }
  }
  if(s.at(0)=='A'&&ans==1&&cnt==2) {
    cout<<"AC"<<endl;
  }
  else {
    cout<<"WA"<<endl;
  }
}