class Cooker {
friend ostream & operator<< (ostream &, Cooker &);
friend istream & operator>> (istream &, Cooker &);
public:
  Cooker();
  Cooker(int, int);
  ~Cooker();
  int getmin();
  int getsec();
  void setmin(int);
  void setsec(int);
  void settimer(int, int);
  void convert();
  int value();
  void operator--();
  void wait1sec();
private:
  int min, sec;
};