using System;

public class Program

{

    public static void Main()

    {

        int cookies = 0;

        int addCookies = 1;

        bool inShop = false;

        Console.WriteLine("Type anything to earn cookies or type 'shop' to enter the shop");

        // Infinite loop

        while(1 == 1)

        {

            //

            // Basic

            //

            // Creates the ability to type and gets rid of null exceptions

            string typed = Console.ReadLine();

            if(typed == null)

                typed = " ";

            // Adds cookies

            if(typed != "shop" && inShop == false)

                cookies += addCookies;

            // Allows you to go into the shop

            if(typed == "shop" && inShop == false)

                inShop = true;

            // Displays Cookie amounts and clears the console

            Console.Clear();

            Console.WriteLine("You have " + cookies + " cookies");

            Console.WriteLine("Type anything to earn cookies or type 'shop' to enter the shop");

            // 

            // Shop

            //

            if(inShop == true)

            {

                // Basic features

                int cookiesPerTypeAmount = 1;

                Console.Clear();

                Console.WriteLine("You have " + cookies + " cookies");

                Console.WriteLine("Type 1 to earn 1 more cookie per type cost: " + cookiesPerTypeAmount * 50 + " or type 'back' to leave");

                // Cookies per type amount

                if(typed == "1" && inShop == true && cookies >= 50)

                {

                    cookies -= cookiesPerTypeAmount * 50;

                    addCookies++;

                    cookiesPerTypeAmount++;

                    Console.Clear();

                    Console.WriteLine("You have " + cookies + " cookies");

                    Console.WriteLine("Type 1 to earn 1 more cookie per type cost: " + cookiesPerTypeAmount * 50 + " or type 'back' to leave");

                }

                // Back function

                if(typed == "back" && inShop == true)

                {

                    inShop = false;

                    Console.Clear();

                    Console.WriteLine("You have " + cookies + " cookies");

                    Console.WriteLine("Type anything to earn cookies or type 'shop' to enter the shop");

                }

            }

        }

    }

}