#include <iostream>
#include <ctime>     
#include <string>
using namespace std;
class TimeStamp {
public:
   void set( long s = 0 ) {
      if ( s <= 0 )
        stamp = time( 0 );
      else
        stamp = s;
   }
   time_t get() const { return stamp; }
   string getAsString() const { return extract( 0, 24 ); }
   string getYear() const { return extract( 20, 4 ); }
   string getMonth() const { return extract( 4, 3 ); }
   string getDay() const { return extract( 0, 3 ); }
   string getHour() const { return extract( 11, 2 ); }
   string getMinute() const { return extract( 14, 2 ); }
   string getSecond() const { return extract( 17, 2 ); }
private:
   string extract( int offset, int count ) const {
     string timeString = ctime( &stamp );
     return timeString.substr( offset, count );
   }
   time_t stamp;
};