import element.*;

public class Month
{
    public static void main(String args[])
    {
        ConsoleWindow c = new ConsoleWindow();
        int month, year, daysInMonth;
        boolean leapYear;
        
        c.out.println("Enter a month and year.");
        c.out.println("I'll print the length of the month.");

        month = c.input.readInt();
        year = c.input.readInt();
        
        // figure out leap year (works for years 1901-2099)
        leapYear = false;
        if (year%4 == 0) leapYear = true;

        switch (month)
        {
          case 4:             // "Fourth,
          case 11:            //   eleventh,
          case 9:             //    ninth,
          case 6:             //     and sixth,
            daysInMonth = 30; // Thirty days to each affix;
            break;
          default:
            daysInMonth = 31; // Every other thirty-one
            break;
          case 2:             // Except the second month alone."
            if (leapYear) daysInMonth = 29;
            else daysInMonth = 28;
            break;
        }
        c.out.println(month+"/"+year+" has "+daysInMonth+" days.");
    }
}
/*
Enter a month and year.
I'll print the length of the month.
2 2000
2/2000 has 29 days.
*/