Distance

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

namespace Problem_01___Distance
{
    class Program
    {
        static void Main(string[] args)
        {

            var initialSpeed = double.Parse(Console.ReadLine());
            var firstTime = double.Parse(Console.ReadLine());
            var secondTime = double.Parse(Console.ReadLine());
            var thirdTime = double.Parse(Console.ReadLine());

            var distanceWithInitialSpeed = initialSpeed * firstTime / 60;
            var distanceWithTenPercent = 0.1 * initialSpeed;
            var distanceSecondKm = distanceWithTenPercent + initialSpeed;
            var distance2 = secondTime / 60;
            var distanceWithRaiseAndTime = distanceSecondKm * distance2;
            var distanceWithFivePercent = distanceSecondKm - (5 * distanceSecondKm / 100);
            var distance3 = thirdTime / 60;
            var distanceWithFivePercentResult = distanceWithFivePercent * distance3;
            var total = distanceWithInitialSpeed + distanceWithRaiseAndTime + distanceWithFivePercentResult;
            Console.WriteLine($"{total:f2}");

        }
    }
}