03. Restaurant Discount

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

namespace Ex3_RestaurantDiscount
{
    class Program
    {
        static void Main(string[] args)
        {
            int groupSize = int.Parse(Console.ReadLine());
            string package = Console.ReadLine();

            double discount = 0;
            double sum = 0;
            string hall = "";

            if (groupSize<=50)
            {
                hall = "Small Hall";
                if ("Normal".Equals(package))
                {
                    sum = 2500 + 500;
                    discount = sum - (sum * 0.05);
                }
                else if ("Gold".Equals(package))
                {
                    sum = 2500 + 750;
                    discount = sum - (sum * 0.10);
                }
                else if ("Platinum".Equals(package))
                {
                    sum = 2500 + 1000;
                    discount = sum - (sum * 0.15);
                }
            }
            else if (groupSize <= 100)
            {
                hall = "Terrace";
                if ("Normal".Equals(package))
                {
                    sum = 5000 + 500;
                    discount = sum - (sum * 0.05);
                }
                else if ("Gold".Equals(package))
                {
                    sum = 5000 + 750;
                    discount = sum - (sum * 0.10);
                }
                else if ("Platinum".Equals(package))
                {
                    sum = 5000 + 1000;
                    discount = sum - (sum * 0.15);
                }
            }
            else if (groupSize <= 120)
            {
                hall = "Great Hall";
                if ("Normal".Equals(package))
                {
                    sum = 7500 + 500;
                    discount = sum - (sum * 0.05);
                }
                else if ("Gold".Equals(package))
                {
                    sum = 7500 + 750;
                    discount = sum - (sum * 0.10);
                }
                else if ("Platinum".Equals(package))
                {
                    sum = 7500 + 1000;
                    discount = sum - (sum * 0.15);
                }
            }

            double sumPerPerson = discount / groupSize;
            if (groupSize<=120)
            {
                Console.WriteLine($"We can offer you the {hall}");
                Console.WriteLine("The price per person is {0:F2}$", sumPerPerson);
            }
            else
            {
                Console.WriteLine("We do not have an appropriate hall.");
            }
        }
    }
}