using System;

public class Program

{

    public static void Main()

    {

        int number;

        Console.WriteLine("Please enter a number");

        number = int.Parse(Console.ReadLine());

        while (number != 0)

        {

            if (number % 2 != 0)

             {

                 Console.Write(1);

            }

            else

             {

                 Console.Write(0);

                }

         number = number / 2;

​

        }

    }

}