Почивката на Дядо Коледа

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

namespace PochivkataNaDqdoKoleda
{
    class Program
    {
        static void Main(string[] args)
        {
            int dniPrestoi = int.Parse(Console.ReadLine());
            string tipPomeshtenie = Console.ReadLine();
            string ocenka = Console.ReadLine();
            double krainaCena = 0;


            // po-malko ot 10 dni
            if (dniPrestoi < 10)
            {
                if (tipPomeshtenie == "room for one person")
                {
                    krainaCena = (dniPrestoi-1) * 18;
                }
                else if (tipPomeshtenie == "apartment")
                {
                    // sumata bez namalenie
                    krainaCena = ((dniPrestoi - 1) * 25);
                    // sumata s namalenie
                    krainaCena = krainaCena - ((krainaCena * 30) / 100);
                }
                else if (tipPomeshtenie == "president apartment")
                {
                    krainaCena = ((dniPrestoi - 1) * 35);
                    krainaCena = krainaCena - ((krainaCena * 10) / 100);
                }
            }
            //mejdu 10 i 15
            if (dniPrestoi >= 10 && dniPrestoi <= 15)
            {
                if (tipPomeshtenie == "room for one person")
                {
                    krainaCena = (dniPrestoi - 1) * 18;
                }
                else if (tipPomeshtenie == "apartment")
                {
                    krainaCena = ((dniPrestoi - 1) * 25);
                    krainaCena = krainaCena - ((krainaCena * 35) / 100);
                }
                else if (tipPomeshtenie == "president apartment")
                {
                    krainaCena = ((dniPrestoi - 1) * 35);
                    krainaCena = krainaCena - ((krainaCena * 15) / 100);
                }
            }
            //poveche ot 15
            if (dniPrestoi > 15)
            {
                if (tipPomeshtenie == "room for one person")
                {
                    krainaCena = (dniPrestoi - 1) * 18;
                }
                else if (tipPomeshtenie == "apartment")
                {
                    krainaCena = ((dniPrestoi - 1) * 25);
                    krainaCena = krainaCena - ((krainaCena * 50) / 100);
                }
                else if (tipPomeshtenie == "president apartment")
                {
                    krainaCena = ((dniPrestoi - 1) * 35);
                    krainaCena = krainaCena - ((krainaCena * 20) / 100);
                }
            }

            //proverka na krainata ocenka i prekalkulaciq na krainaCena
            if (ocenka == "positive")
            {
                krainaCena = krainaCena * 1.25;
            }
            else if (ocenka == "negative")
            {
                krainaCena = krainaCena * 0.9 ;
            }
            else
            {
                Console.WriteLine("Nevalidna ocenka!");
            }

            //izvejdane na krainata suma
            Console.WriteLine($"{krainaCena:f2}");
        }
    }
}