Sea Trip

using System;

namespace SeaTrip
{
    internal class Program
    {
        static void Main(string[] args)
        {
            double foodPrice = double.Parse(Console.ReadLine()) * 3;
            double souvenirPrice = double.Parse(Console.ReadLine()) * 3;
            double dayHotelPrice = double.Parse(Console.ReadLine());

            double hotelPrice = dayHotelPrice * 0.90 + dayHotelPrice * 0.85 + dayHotelPrice * 0.80;
            double transportPrice = 210.0 * 2 / 100 * 7 * 1.85;

            Console.WriteLine($"Money needed: {foodPrice + souvenirPrice + hotelPrice + transportPrice:f2}");
        }
    }
}