Thea The Photographer

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _19_TheaThePhotographer
{
    class TheaThePhotographer
    {
        static void Main(string[] args)
        {
            ulong pictures = ulong.Parse(Console.ReadLine());
            ulong filterTime = ulong.Parse(Console.ReadLine());
            ulong filteredPercentage = ulong.Parse(Console.ReadLine());
            ulong uploadTime = ulong.Parse(Console.ReadLine());
            ulong totalTime = pictures * filterTime + (ulong)Math.Ceiling(filteredPercentage * pictures / 100.0) * uploadTime;

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