Problem 7. Count of Bits One

import java.util.Scanner;


public class CountOfBitsOne {

	public static void main(String[] args) {

		Scanner input = new Scanner(System.in);
		int number = input.nextInt();
		int count = 0;

		for (int i = 0; i < 32; i++) {

			int temp = 1<<i;
			temp = number & temp;
			if (temp >> i == 1) {
				count++;
			}
		}
		input.close();
		System.out.println(count);
	}

}