BitsOne

package javaSyntaxix;
import java.util.Scanner;

public class CountOfBitsOne {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int number = sc.nextInt();
        int count = 0;
        while(number!=0)
        {
            if(number%2==1)
            {
                count++;
            }
            number/=2;
        }
        System.out.println(count);
    }

}