import java.util.Scanner; public class Main { static String rs = ""; public static void main(String[] args) { Scanner sc = new Scanner(System.in); int num = sc.nextInt(); Start(num); System.out.println(rs); } public static void Start(int num) { rs = num % 2 + rs; num = num / 2; if(num >= 1) { Start(num); } } }