import java.util.Scanner;

public class TheaThePhotographer {
    public static void main(String[] args) {
        Scanner s = new Scanner(System.in);

        int numberOfPictures = Integer.parseInt(s.nextLine());
        int filterTimeSecondsPerPic =Integer.parseInt(s.nextLine());
        int filterFactor=Integer.parseInt(s.nextLine());
        int timeUpploadPerPic=Integer.parseInt(s.nextLine());

        double procent=filterFactor/100.0;
        double usefull=Math.ceil(procent*numberOfPictures);
        long fullTime=(long)numberOfPictures*filterTimeSecondsPerPic;
        long fullUpploadTime=(long)usefull*timeUpploadPerPic;
        long totalTime=fullUpploadTime+fullTime;


        long seconds = (totalTime % 60);
            long minutes = (totalTime / 60);
            long hours = (minutes / 60);
            long days = (hours / 24);


            if (seconds >= 60)
            {
                seconds = seconds % 60;
            }
            if (minutes>=60)
            {
                minutes = minutes % 60;
            }
            if (hours>=24)
            {
                hours = hours % 24;
            }

        System.out.printf("%d:%02d:%02d:%02d",days,hours,minutes,seconds);




    }
}