#include <iostream>
#include <algorithm>
#include <string>
using namespace std;

int main(){
  string S;
  cin >> S;
  
  int chk = 0;
  
  
  for(int i=1; i<S.length() ; ++i){
    if(S[i]<='z' && 'a'<=S[i]) chk +=0;
    else if(S[i]=='C' && 2<=i && i<S.length()-1) chk++;
    else chk-=100;
  }  
  if(S[0]=='A' && chk==1) cout << "AC" << endl;
  else cout << "WA" << endl;

}
### Prompt

Please provide a CPP coded solution to the problem described below:

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

### Response

```cpp
#include <iostream>
#include <algorithm>
#include <string>
using namespace std;

int main(){
  string S;
  cin >> S;
  
  int chk = 0;
  
  
  for(int i=1; i<S.length() ; ++i){
    if(S[i]<='z' && 'a'<=S[i]) chk +=0;
    else if(S[i]=='C' && 2<=i && i<S.length()-1) chk++;
    else chk-=100;
  }  
  if(S[0]=='A' && chk==1) cout << "AC" << endl;
  else cout << "WA" << endl;

}
```