package datetime;

class DaysOfYear {
	int year;
	int days;
	
	public DaysOfYear(int year, int days) {
		this.year = year;
		this.days = days;
	}
}

class DaysOf4Year {
	int firstYear;
	DaysOfYear[] doy;
	
	void setYearAfter2000(boolean after2k) {
		this.doy = new DaysOfYear[4];
		this.doy[0] = new DaysOfYear(4, 1461);
		this.doy[1] = new DaysOfYear(3, 1096);
		if (after2k) {
			this.firstYear = 2000;
			this.doy[1] = new DaysOfYear(2, 731);
			this.doy[1] = new DaysOfYear(1, 366);
		} else {
			this.firstYear = 1970;
			this.doy[1] = new DaysOfYear(2, 730);
			this.doy[1] = new DaysOfYear(1, 365);
		}
	}
}

class Datetime {
	int year;
	int month;
	int date;
	int hour;
	int minute;
	int second;
	
	private long setYear(long day) {
		int[] daysOfYear = { 0, 365, 730, 1096 };
		
		if (day >= 10957) {
			day -= 10957;
			this.year = 2000;
			daysOfYear[1] += 1;
			daysOfYear[2] += 1;
		} else {
			this.year = 1970;
		}
		
		while (day >= 1461) {
			this.year += 4;
			day -= 1461;
		}

		for (int i = 3; i > 0; i--) {
			if (day >= daysOfYear[i]) {
				this.year += i;
				day -= daysOfYear[i];
				break;
			}
		}

		return day;
	}
	
	private void setMonthDate(int day) {
		int[] daysBeforeMonth = { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334 };
		if ((this.year % 400 == 0) || ((this.year % 100 != 0) && (this.year % 4 == 0))) {
			for (int i = 2; i < 12; i++) {
				daysBeforeMonth[i] += 1;
			}
		}
		for (int i = 11; i >= 0; i--) {
			if (daysBeforeMonth[i] < day) {
				this.month = i + 1;
				this.date = day - daysBeforeMonth[i] + 1;
				return;
			}
		}
	}
	
	private void setSecond(long second) {
		this.hour = (int)(second / 3600);
		second %= 3600;
		this.minute = (int)(second / 60);
		second %= 60;
		this.second = (int)second;
	}
	
	void loadStamp(long stamp)	{
		this.year = 0;
		this.month = 0;
		this.date = 0;
		this.hour = 0;
		this.minute = 0;
		this.second = 0;
		this.setMonthDate((int)this.setYear(stamp / 86400));
		this.setSecond(stamp % 86400);
	}
	
	String get() {
		return String.format("%d-%d-%d %d:%02d:%02d",
				this.year, this.month, this.date, this.hour, this.minute, this.second);
	}
}