#include <iostream>
using namespace std;

bool LeapYearCheck(unsigned years)
{
	if (((years % 4 == 0) && (years % 100 != 0)) || (years % 400 == 0))
	{
		return true;
	}
	else
	{
		return false;
	}
}

int main()
{
	long long int sec;
	long long int minutes = 0;
	long long int hours = 0;
	long long int days = 1;
	long int months = 1;
	long int years = 1970;

	cin >> sec;

	while (sec > 60)
	{
		sec -= 60;
		minutes++;
	}
	while (minutes > 60)
	{
		minutes -= 60;
		hours++;
	}
	while (hours > 24)
	{
		hours -= 24;
		days++;
	}
	while (days >= 31)
	{
		if (LeapYearCheck(years) == true)
		{
			if (31 < days && days <= 60)
			{
				days -= 31;
				months = 2;
			}
			else if (60 < days && days <= 91)
			{
				days -= 60;
				months = 3;
			}
			else if (91 < days && days <= 121)
			{
				days -= 91;
				months = 4;
			}
			else if (121 < days && days <= 152)
			{
				days -= 121;
				months = 5;
			}
			else if (152 < days && days < 182)
			{
				days -= 152;
				months = 6;
			}
			else if (182 < days && days <= 213)
			{
				days -= 182;
				months = 7;
			}
			else if (213 < days && days <= 244)
			{
				days -= 213;
				months = 8;
			}
			else if (244 < days && days <= 274)
			{
				days -= 244;
				months = 9;
			}
			else if (274 < days && days <= 305)
			{
				days -= 274;
				months = 10;
			}
			else if (305 < days && days <= 335)
			{
				days -= 305;
				months = 11;
			}
			else if (335 < days && days <= 366)
			{
				days -= 335;
				months = 12;
			}
			else if (days > 366)
			{
				days -= 365;
				years++;
			}

		}
		else if (LeapYearCheck(years) == false)
		{
			if (31 < days && days <= 59)
			{
				days -= 31;
				months = 2;
			}
			else if (59 < days && days <= 90)
			{
				days -= 59;
				months = 3;
			}
			else if (90 < days && days <= 120)
			{
				days -= 90;
				months = 4;
			}
			else if (120 < days && days <= 151)
			{
				days -= 120;
				months = 5;
			}
			else if (151 < days && days <= 181)
			{
				days -= 151;
				months = 6;
			}
			else if (181 < days && days <= 212)
			{
				days -= 181;
				months = 7;
			}
			else if (212 < days && days <= 243)
			{
				days -= 212;
				months = 8;
			}
			else if (243 < days && days <= 273)
			{
				days -= 243;
				months = 9;
			}
			else if (273 < days && days <= 304)
			{
				days -= 273;
				months = 10;
			}
			else if (304 < days && days <= 334)
			{
				days -= 304;
				months = 11;
			}
			else if (334 < days && days <= 365)
			{
				days -= 334;
				months = 12;
			}
			else if (days > 365)
			{
				days -= 364;
				years++;
			}
		}
	}
	cout << days << "." << months << "." << years << " " << hours << ":" << minutes << ":" << sec << " ";
	return 0;
}