import java.util.Objects;

public class Date implements Comparable<Date> {
    private int year;
    private Month month;
    private int day;

    public Date(int year, Month month, int day) {
	this.year = year;
	this.month = month;
	this.day = day;
    }

    @Override
    public boolean equals(Object obj) {
	if (obj == null) 
	    return false;
	if (!getClass().equals(obj.getClass()))
	    return false;
	Date d = (Date)obj;
	return year == d.year &&
            month.equals(d.month) &&
            day == d.day;
    }

    public int compareTo(Date other) {
        int yearDiff = year - other.year;
        if (yearDiff != 0)
            return yearDiff;
        int monthDiff = month.compareTo(other.month);
        if (monthDiff != 0)
            return monthDiff;
        return day - other.day;
    }
    
    @Override
    public int hashCode() {
	return Objects.hash(year, month, day);
    }

    public String toString() {
	return String.format("%d %s %d", day, month, year);
    }
}