#include <string>
#include <list>
using namespace std;


class Note {
public:
  string text() const;
  void print();
  Note(int time, string t) : _msTimeStamp(time), _text(t) { }
private:
  string _text;
  int _msTimeStamp;
};

void Note::print() {
  prDate(_msTimeStamp);
  cout << endl;
  cout << _text << endl;
}

class NoteBook {
public:
  void add(Node *n) { _notes.push_back(n); }
  void print() {
    for(auto note_pointer : _notes)
      note_pointer->print();
  }
private:
  list<Note*> _notes;
};