#include <iostream>

class Box {
public:
  Box();
  ~Box();

  Box(const Box &other);
  
  Box & operator=(const Box &other);

  int getValue() const;

  void setValue(int value);

private:
  int *value;
};

Box::Box() {
  cout << "DC" << endl;
  value = new int;
  *value = 0;
}

Box::~Box() {
  cout << "DE" << endl;
  delete value;
}

Box::Box(const Box &other) {
  cout << "CC" << endl;
  value = new int;
  *value = *(other.value);
}

Box &Box::operator=(const Box &other) {
  cout << "OP" << endl;
  *value = *(other.value);

  return *this;
}

int Box::getValue() const {
  cout << "GV" << endl;
  return *value;
}

void Box::setValue(int val) {
  cout << "SV" << endl;
  *value = val;
}


Box copy(Box b) {
  Box result;
  result = b;
  return result;
}

int main() {
  Box a;
  Box b = a;
  b.setValue(17);
  cout << endl;
  a = copy(b);
  cout << endl;
  cout << "a: " << a.getValue () <<endl;
  cout << "b: " << b.getValue () <<endl;

  return 0;
}