import java.io.IOException;
import java.time.LocalDate;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) throws IOException {
        Scanner scanner = new Scanner(System.in);

        int year = scanner.nextInt();
//        int year = 2023;
        LocalDate d1 = LocalDate.of(year, 1, 1);
        LocalDate d2 = LocalDate.of(year, 12, 31);

        int weekDay = d1.getDayOfWeek().getValue() - 1;
        int answer = 1;

        while (!d1.equals(d2)) {
            weekDay = (weekDay + 1) % 7;
            d1 = d1.plusDays(1);
            if (weekDay == 0 || d1.getDayOfMonth() == 1) {
                answer++;
            }
        }

        System.out.println(answer);
    }

}