using System;

namespace _19___Thea_the_Photographer
{
    class Program
    {
        static void Main(string[] args)
        {
            double numberPics = double.Parse(Console.ReadLine());
            int filterTime = int.Parse(Console.ReadLine());
            double filterFactor = double.Parse(Console.ReadLine());
            int uploadTime = int.Parse(Console.ReadLine());

            double filterPicture = Math.Ceiling(numberPics * (filterFactor / 100.0));
            double uploadPicture = uploadTime * filterPicture;
            double chekTime = numberPics * filterTime;
            double totalTime = chekTime + uploadPicture;

            //TimeSpan time = TimeSpan.FromSeconds(totalTime);
            //string str = time.ToString(@"d\:hh\:mm\:ss");
            //Console.WriteLine(str);

            double sec = 0;
            double minutes = 0;
            double hours = 0;
            double days = 0;

            if (totalTime >= 86400)
            {
                days = Math.Floor(totalTime / 86400);
                totalTime = totalTime - (days * 68400);
            }
            if (totalTime >= 3600)
            {
                hours = Math.Floor(totalTime / 3600);
                totalTime = totalTime - (hours * 3600);
            }
            if (totalTime >= 60)
            {
                minutes = Math.Floor(totalTime / 60);
                totalTime = totalTime - (minutes * 60);
            }
            if (totalTime < 60)
            {
                sec = totalTime;
            }

            Console.WriteLine($"{(int)days}:{(int)hours:D2}:{(int)minutes:D2}:{(int)sec:D2}");

        }
    }
}