using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("What function would you like me to do? (ex. count)");

        Console.WriteLine("?help for functions");

        string function = Console.ReadLine();

        if(function == "count")

        {

            Console.WriteLine("How much would you like me to count");

            int number = Convert.ToInt32(Console.ReadLine());

            for(int i = 1; i < number; i++)

            {

                Console.WriteLine(i);

            }

        } else if(function == "Do math")

        {

            Console.WriteLine("+ / - / : / x");

            string choice = Console.ReadLine();

            if(choice == "+")

            {

                Console.WriteLine("First number");

                int Anum1 = Convert.ToInt32(Console.ReadLine());

                Console.WriteLine("+");

                int Anum2 = Convert.ToInt32(Console.ReadLine());

                int Aresult = Anum1 + Anum2;

                Console.WriteLine(Aresult);

            } else if(choice == "-")

            {

                Console.WriteLine("First number");

                int Snum1 = Convert.ToInt32(Console.ReadLine());

                Console.WriteLine("-");

                int Snum2 = Convert.ToInt32(Console.ReadLine());

                int Sresult = Snum1 - Snum2;

                Console.WriteLine(Sresult);

            }

        }

    }

}