using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace AtCoder
{

    static class Program
    {
        static void Main()
        {
            Solve();

            Console.ReadKey();
        }

        static void Solve()
        {
            int N = GetInt();

            List<string> memo = new List<string>();
            Rec(N,ref memo);
            memo.Reverse();
            for(int i = 0; i < memo.Count; i++)
            {
                Console.Write(memo[i]);
            }

            //Console.WriteLine(ans);
        }

        static void Rec(int n,ref List<string> memo)
        {
            if (n == 0)
            {
                memo.Add("0");
            }else if(n == 1)
            {
                memo.Add("1");
            }else if(n == -1)
            {
                memo.Add("1");
                memo.Add("1");
            }
            else if (n > 0)
            {
                memo.Add((n%(-2)).ToString());
                Rec(n / (-2), ref memo);
            }
            else
            {
                if (n % (-2) == 0)
                {
                    memo.Add("0");
                    Rec(n / (-2),ref memo);
                }
                else
                {
                    memo.Add("1");
                    Rec(1 + n / (-2),ref memo);
                }
            }
        }

        static public string GetStr() { return Console.ReadLine(); }
        static public int GetInt() { return int.Parse(Console.ReadLine()); }
        static public long GetLong() { return long.Parse(Console.ReadLine()); }
        static public string[] GetStrArray() { return Console.ReadLine().Split(' '); }
        static public int[] GetIntArray() { return Console.ReadLine().Split(' ').Select(int.Parse).ToArray(); }
        static public long[] GetLongArray() { return Console.ReadLine().Split(' ').Select(long.Parse).ToArray(); }
        static public List<double> GetDoubleList() { return Console.ReadLine().Split(' ').Select(double.Parse).ToList(); }
        static public void WriteObjects<T>(IEnumerable<T> values) { foreach (var o in values) { Console.Write(o + " "); } }
        static string yesno(this bool b) { return b ? "yes" : "no"; }
        static string YesNo(this bool b) { return b ? "Yes" : "No"; }
        static string YESNO(this bool b) { return b ? "YES" : "NO"; }

        static bool eq<T, U>() => typeof(T).Equals(typeof(U));
        static T ct<T, U>(U a) => (T)Convert.ChangeType(a, typeof(T));
        static T cv<T>(string s) => eq<T, int>() ? ct<T, int>(int.Parse(s))
                           : eq<T, long>() ? ct<T, long>(long.Parse(s))
                           : eq<T, double>() ? ct<T, double>(double.Parse(s))
                           : eq<T, char>() ? ct<T, char>(s[0])
                                             : ct<T, string>(s);
        static void Multi<T>(out T a) => a = cv<T>(GetStr());
        static void Multi<T, U>(out T a, out U b)
        {
            var ar = GetStrArray(); a = cv<T>(ar[0]); b = cv<U>(ar[1]);
        }
        static void Multi<T, U, V>(out T a, out U b, out V c)
        {
            var ar = GetStrArray(); a = cv<T>(ar[0]); b = cv<U>(ar[1]); c = cv<V>(ar[2]);
        }
    }
}

Measured memory_bytes: 13140