import java.util.*;

public class TimeDifference {
  public static void main(String[] av){
     Date date = new GregorianCalendar(2010, 1, 1, 10, 00).getTime();
     Date today = new Date();
     long diff = today.getTime() - date.getTime();
     long days=(diff / (1000 * 60 * 60 * 24));
     System.out.println((days*24) + " hours.");
  }
}