19. Thea The Photographer

using System;
using System.Numerics;
using System.Text;

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

            int filteredPictures = (int)Math.Ceiling(pictures * filterFactor / 100.0);
            long timeForFiltering = (long)pictures * filterTime;
            long timeForUpload = (long)filteredPictures * uploadTime;
            long totalTime = timeForFiltering + timeForUpload;

            TimeSpan time = TimeSpan.FromSeconds(totalTime);

            string format = time.ToString(@"d\:hh\:mm\:ss");

            Console.WriteLine(format);
        }
    }
}