import java.util.Scanner;
public class demo6 {
public static void main(String[] args) {
int N;
Scanner in = new Scanner(System.in);
while(in.hasNext()){
String s="";
N = in.nextInt();
for(int n=N;n>0;n/=2)
s=(n%2)+s;
System.out.println(s);
}
}
}