using System;

public class Display

{

  public static void Main()

  {   

    string answer;  

    string result; 

         Console.Write("Input a Number : ");

        answer = Console.ReadLine();

            int num = Convert.ToInt32(answer);

            result = "";

            while (num > 1)

            {

                int remainder = num % 2;

                result = Convert.ToString(remainder) + result;

                num /= 2;

            }

            result = Convert.ToString(num) + result;

            Console.WriteLine("Binary: {0}", result);

        }

   }