#include <bits/stdc++.h>
using namespace std;

int main(){
  int n;
  string s;
  bool c=true,d=false;
  cin >> s;
  for(n=2;n<s.length();n++){
    if(isupper(s[n])&&d){
	  c=false;
    }else if(s[n]=='C'){
      d=true;
    }
  }
  if(s[0]=='A'&&islower(s[1])&&d&&c&&s[s.length()-1]!='C'){
    cout << "AC" << endl;
  }else {
    cout << "WA" << endl;
  }
}
### Prompt

Develop a solution in cpp 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 <bits/stdc++.h>
using namespace std;

int main(){
  int n;
  string s;
  bool c=true,d=false;
  cin >> s;
  for(n=2;n<s.length();n++){
    if(isupper(s[n])&&d){
	  c=false;
    }else if(s[n]=='C'){
      d=true;
    }
  }
  if(s[0]=='A'&&islower(s[1])&&d&&c&&s[s.length()-1]!='C'){
    cout << "AC" << endl;
  }else {
    cout << "WA" << endl;
  }
}
```