Time

import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int d = sc.nextInt();
        int h = sc.nextInt();
        int m = sc.nextInt();
        int s = sc.nextInt();

        int daysS = 86400;
        int hoursS = 3600;
        int minutesS = 60;
        int secondsS = 1;

        int result = (d * daysS) + (h * hoursS) + (m * minutesS) + (s * secondsS);

        System.out.println(result);


    }
}