Using System; class HelloWorld {

using System;

class HelloWorld {

public static int ikki(int n){

if (n > 1)

{

string r="";

int re = n % 2;

r = Convert.ToString(re) + r;

r = Convert.ToString(n) + r;

Console.WriteLine(r);

return ikki(n/2);

}

else return 0;

}

static void Main() {

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

a=ikki(a);

}

}

using System;

public class Exercise11

{

public static void Main()

{

string r;

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

r= "";

while (n > 1)

{

int re = n % 2;

r = Convert.ToString(re) + r;

n /= 2;

}

r = Convert.ToString(n) + r;

Console.WriteLine(r);

}

}