text: #if !defined(SECRET_HANDSHAKE_H)
  #define SECRET_HANDSHAKE_H
  
  #include <vector>
  #include <string>
  #include <algorithm>
  
  namespace secret_handshake {
  
      std::vector<std::string> commands(int input);
  
  }  // namespace secret_handshake
  
  #endif // SECRET_HANDSHAKE_H
  