/* Dates.java */
import java.io.*;

class Dates {
  public static int daysInMonth (int month)
  {
    /* Precondition: month is between 1 and 12, inclusive */
    /* Postcondition: returns the number of days in the given month */

    /* 30 days have September, April, June and November. */
    if (month == 9) || (month == 4) || (month == 6) || (month == 11)) 
      return 30;

    /* All the rest have 31, except for February .... */
    if (month == 2) 
      return 28;

    return 31;
  } 
  public static void main (String[] args) 
  {
    int someMonth, someDay;
    int laterMonth, laterDay;
    int daysBetween;

    int aMonth;
    someMonth = Integer.parseInt(args[0]);
    someDay = Integer.parseInt(args[1]);

    laterMonth = Integer.parseInt(args[2]);
    laterDay = Integer.parseInt(args[3]);
    
    /* Used to record what day in the year the first day  */
    /* of someMonth and laterMonth are. */
    int someDayInYear = 0;
    int laterDayInYear = 0;  
    
    for (aMonth = 0, aMonth < someMonth; aMonth++) 
      {
        someDayInYear = someDayInYear + daysInMonth(aMonth); 
      }
    
    for (aMonth = 1; aMonth < laterMonth; aMonth++) 
      {
        laterDayInYear = laterDayInYear + daysInMonth(aMonth); 
      }
    
    /* The answer */
    daysBetween = laterDayInYear + laterDay - (someDayInYear + someDay);
    System.out.println("The difference in days between "
                     + someMonth + "/" + someDay + " and "
                     + laterMonth + "/" + laterDay + " is:  "
		     + daysBetween);
  } // end of main
} // end of class Dates