namespace ConsoleApp1
{
    using System;
   public class Program
    {
       public static void Main()
        {
            long picturesTaken = long.Parse(Console.ReadLine());
            long filteringTime = long.Parse(Console.ReadLine());
            long percentage = long.Parse(Console.ReadLine());
            long uploadTime = long.Parse(Console.ReadLine());

            long filteredAmount = (long)Math.Ceiling(picturesTaken * percentage / 100d);
            long filterAllPictures = picturesTaken * filteringTime;
            long uploadAllPictures = filteredAmount * uploadTime;
            long totalTime = filterAllPictures + uploadAllPictures;

            TimeSpan projectTime = TimeSpan.FromSeconds(totalTime);

            Console.WriteLine("{0:D1}:{1:D2}:{2:D2}:{3:D2}",
                projectTime.Days,
                projectTime.Hours,
                projectTime.Minutes,
                projectTime.Seconds);
        }
    }
}