Problem 01. Distance

using System;
using System.Collections.Generic;

namespace ConsoleApplication
{
    internal class Program
    {
        public static void Main(string[] args)
        {
            var first = int.Parse(Console.ReadLine());
            var secound = int.Parse(Console.ReadLine());
            var third = int.Parse(Console.ReadLine());
            var four = int.Parse(Console.ReadLine());


            var total = first*((double)secound/(double)60)+((double)first*1.1)*((double)third/(double)60)+((first*1.1)*0.95)*((double)four/(double)60);

            //Console.WriteLine(first*((double)secound/(double)60));
            //Console.WriteLine(((double)first*1.1)*((double)third/(double)60));
            //Console.WriteLine(((first*1.1)*0.95)*((double)four/(double)60));

            Console.WriteLine("{0:f2}",total);




        }
    }
}