Sea trip

using System;

namespace _01._Sea_Trip
{
    class Program
    {
        static void Main(string[] args)
        {
            double moneyForFood = double.Parse(Console.ReadLine());
            double moneyForSouvenir = double.Parse(Console.ReadLine());
            double moneyForHotel = double.Parse(Console.ReadLine());

            double gasNeeded = 4.2 * 7;
            double moneyForGas = gasNeeded * 1.85;

            double moneyFor3Days = 3 * moneyForFood + 3 * moneyForSouvenir;

            double day1InHotel = moneyForHotel * 0.9;
            double day2InHotel = moneyForHotel * 0.85;
            double day3InHotel = moneyForHotel * 0.8;

            double tottalPrice = moneyForGas + moneyFor3Days + day1InHotel + day2InHotel + day3InHotel;

            Console.WriteLine($"Money needed: {tottalPrice:f2}");
        }
    }
}