using System;

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Lucky number creator");

        math();

    }

    public static int math() 

    {

        Console.WriteLine("What is your favorite number?");

        int fav = Int32.Parse(Console.ReadLine());

        Console.WriteLine("What is your age?");

        int age = Int32.Parse(Console.ReadLine());

        int luck = age * fav;

        luck = luck/2;

        luck = luck - 7;

        luck = luck + 3;

        luck = luck / age;

        luck = luck + fav;

        luck = Math.Abs(luck);

        Console.WriteLine("calculating lucky number...");

        Console.WriteLine(luck);

        if (luck == 13)

        {

            Console.WriteLine("not so lucky...");

        }

        else Console.WriteLine("this is your lucky number!");

        return luck;

    }

}