02. Book Orders22 August 2014

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

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            int orders = int.Parse(Console.ReadLine());
            int totalBooks = 0;
            double totalPrice = 0.0;
            // tuk si vurtim sqka edna poruchaka na kolkoto puti mi e order
            for (int i = 0; i < orders; i++)
            {

                int packets = int.Parse(Console.ReadLine());
                int booksPerPack = int.Parse(Console.ReadLine());
                double price = double.Parse(Console.ReadLine());

                int allBooks = packets * booksPerPack;
                double discount = 0.0;
                if (packets >= 10 && packets <= 19)
                {
                    discount = 0.05;
                }
                else if (packets >= 20 && packets <= 29)
                {
                    discount = 0.06;
                }
                else if (packets >= 30 && packets <= 39)
                {
                    discount = 0.07;
                }
                else if (packets >= 40 && packets <= 49)
                {
                    discount = 0.08;
                }
                else if (packets >= 50 && packets <= 59)
                {
                    discount = 0.09;
                }
                else if (packets >= 60 && packets <= 69)
                {
                    discount = 0.10;
                }
                else if (packets >= 70 && packets <= 79)
                {
                    discount = 0.11;
                }
                else if (packets >= 80 && packets <= 89)
                {
                    discount = 0.12;
                }
                else if (packets >= 90 && packets <= 99)
                {
                    discount = 0.13;
                }
                else if (packets >= 100 && packets <= 109)
                {
                    discount = 0.14;
                }
                else if (packets >= 110)
                {
                    discount = 0.15;
                }
                else if (packets < 10)
                {
                    discount = 0.0;
                }
                // ((allBooks * price) * discount) tova mi e kolko mi e otstupkata - (price * allBooks)
                double finalPrice = (price * allBooks) - ((allBooks * price) * discount);
                totalPrice = totalPrice + finalPrice;

                totalBooks = totalBooks + allBooks;
            }
            Console.WriteLine(totalBooks);
            Console.WriteLine("{0:F2}", totalPrice);
        }
    }
}