//大文字は65-90, 小文字は97-122
#include <iostream>
#include <string>
int main(){
  std::string s;
  bool a=true;
  int n=0;
  std::cin>>s;
  a=(s[0]=='A'?a:false);
  for(int i=2;i<s.size()-1;++i){
    if(s[i]=='C'){++n;}
    else{a=(s[i]>96&&s[i]<123?a:false);}
  }
  a=(s.back()>96&&s.back()<123?a:false);
  a=(s[1]>96&&s[1]<123?a:false);
  std::cout << (a&&n==1?"AC":"WA") << "\n";
}
  
### 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
//大文字は65-90, 小文字は97-122
#include <iostream>
#include <string>
int main(){
  std::string s;
  bool a=true;
  int n=0;
  std::cin>>s;
  a=(s[0]=='A'?a:false);
  for(int i=2;i<s.size()-1;++i){
    if(s[i]=='C'){++n;}
    else{a=(s[i]>96&&s[i]<123?a:false);}
  }
  a=(s.back()>96&&s.back()<123?a:false);
  a=(s[1]>96&&s[1]<123?a:false);
  std::cout << (a&&n==1?"AC":"WA") << "\n";
}
  
```