import java.math.BigInteger;
import java.util.*;
public class Main{     
    public static  void main(String[] args)  {   
        Scanner cin = new Scanner(System.in);             
        while(cin.hasNext()){
            String str = cin.next();
            String ans = new BigInteger(str,10).toString(2);//10进制转换2进制 
            System.out.println(ans);
     }
        cin.close();  
    }  
}