01. House Price

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

namespace House_Price
{
    class Program
    {
        static void Main(string[] args)
        {
            double areaSmallRoom = double.Parse(Console.ReadLine());
            double areaKitchen = double.Parse(Console.ReadLine());
            double PriceArea = double.Parse(Console.ReadLine());
            double bathroom = areaSmallRoom /2;
            double areaSecondRoom =(areaSmallRoom *0.1)+areaSmallRoom ;
            double areaThirdRoom = (areaSecondRoom *0.1)+ areaSecondRoom;
            double area = (areaSmallRoom + areaKitchen + bathroom + areaSecondRoom + areaThirdRoom);
            double koridor = area%5;
            double result = area + koridor;
            double Price = result * PriceArea;
            Console.WriteLine("{0:f2}",Price);
        }
    }
}