java

import java.util.*;
public class Main{
    public static void main(String[] arg){
        Scanner s=new Scanner(System.in);
        while(s.hasNext()){
            Integer inputInteger=s.nextInt();
            int count=0;
            while(inputInteger!=0){
                inputInteger^=inputInteger&((~inputInteger)+1);
                count++;
            }
            System.out.println(count);
        }
    }
}