#include <iostream>

using namespace std;

int main()
{
	int days = 0;
	int daysInOneYear = 365;
	int counterYears = 0;
	int leftDays = 0;

	cin >> days;

	while (true)
	{
		if (counterYears % 4 == 0)
		{
			daysInOneYear = 366;

			if (counterYears % 400 == 0)
			{
				daysInOneYear = 366;
			}
			if (counterYears % 100 == 0)
			{
				daysInOneYear = 365;
			}

		}
		else
		{
			daysInOneYear = 365;
		}

		if (counterYears % 100 == 0)
		{
			daysInOneYear = 365;
		}

		leftDays = days - daysInOneYear;
		counterYears++;
		days = leftDays;



		if (leftDays <= 0)
		{
			break;
		}


	}
	cout << counterYears << endl;



	return 0;
}