import java.io.*;
public class DecBin {
	/**
	 * @author Jh0uBrt   HypnotiC
	 * Decimal a binario! a mi manera! xD
	 */
	public static void main(String[] args)throws IOException {
		BufferedReader L = new BufferedReader(new InputStreamReader(System.in));
		int Decimal,R, x = 0;
		String Binario = "";
 
		Decimal=Integer.parseInt(L.readLine());
 
		R = Decimal%2;
		if (R == 1){
 
		while (Decimal > 1){
			Decimal /= 2;
		x = Decimal%2;
		Binario  = (x+Binario +"");
		 }
		}
		else{
 
		while (Decimal > 0){
			Decimal /= 2;
			x = Decimal%2;
			Binario  = (x+Binario +"");
			 }
		}
 
		System.out.println(Binario +x);
	}
 
}

import java.io.*;
 
public class teest{
 
	/**
	 * @author Jh0uBrt   HypnotiC
	 * Decimal a binario!! ;D
	 */
 
    public static void main(String[] args) throws IOException {
 
    	BufferedReader L = new BufferedReader(new InputStreamReader(System.in));
		int Decimal;
		String Bin;
 
		Decimal = Integer.parseInt(L.readLine());
 
		Bin = Integer.toBinaryString(Decimal);
 
		System.out.print(Bin+"\n");
 
    }
 
}