Билети за мач

using System;
using System.Runtime.InteropServices;

namespace Калинка
{
    class Program
    {
        static void Main(string[] args)
        {
            var budget = double.Parse(Console.ReadLine());
            var category = Console.ReadLine().ToLower();     //  "VIP" or "Normal"
            var numberPeople = double.Parse(Console.ReadLine());

            if (numberPeople <= 4 )
            {
                budget = budget * 0.25;
            }
            else if (numberPeople <= 9)
            {
                budget = budget * 0.40;
            }
            else if (numberPeople <= 24)
            {
                budget = budget * 0.50;
            }
            else if (numberPeople <= 49)
            {
                budget = budget * 0.60;
            }
            else
            {
                budget = budget * 0.75;
            }



            if (category == "normal")
            {
                var priceForAll = numberPeople * 249.99;
                var diff = budget - priceForAll;

                if (diff >= 0)
                {
                    Console.WriteLine($"Yes! You have {diff:f2} leva left.");

                }
                else
                {
                    diff = Math.Abs(diff);
                    Console.WriteLine($"Not enough money! You need {diff:f2} leva.");
                }

            }
            else if (category == "vip")
            {
                var priceForAll = numberPeople * 499.99;
                var diff = budget - priceForAll;

                if (diff >= 0)
                {
                    Console.WriteLine($"Yes! You have {diff:f2} leva left.");
                }
                else
                {
                    diff = Math.Abs(diff);
                    Console.WriteLine($"Not enough money! You need {diff:f2} leva.");
                }
            }

        }
    }
}