import java.util.Scanner;
public class Main {
public static void main(String[] args) { Scanner scanner = new Scanner(System.in); while (scanner.hasNext()) { String string = Long.toBinaryString(scanner.nextLong()); int count = 0; for (int i = 0; i < string.length(); i++) { if ("1".equals(String.valueOf(string.charAt(i)))) { count++; } } System.out.println(count); } }
}