#include<iostream>
using namespace std;

int main(){
  string ac;
  cin >> ac;
  int cnt = 0;
  int count = 0;
  string ans = "AC";
  
  if(ac[0] != 'A') ans = "WA";
  
  for(int i = 2; i < ac.size() - 1; i++){
    if(ac[i] == 'C') cnt++;
  }
  for(int i = 1; i < ac.size(); i++){
    if(isupper(ac[i])) count++;
  }

  if(cnt != 1 || count != 1) ans = "WA";
  
  cout << ans << endl;
}
### Prompt

Please formulate a CPP solution to the following problem:

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>
using namespace std;

int main(){
  string ac;
  cin >> ac;
  int cnt = 0;
  int count = 0;
  string ans = "AC";
  
  if(ac[0] != 'A') ans = "WA";
  
  for(int i = 2; i < ac.size() - 1; i++){
    if(ac[i] == 'C') cnt++;
  }
  for(int i = 1; i < ac.size(); i++){
    if(isupper(ac[i])) count++;
  }

  if(cnt != 1 || count != 1) ans = "WA";
  
  cout << ans << endl;
}
```