package no378;

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		long base = sc.nextLong();
		long p1 = base * 2;
		long p2 = 0;
		while(base > 0) {
			p2 += base;
			base /= 2;
		}
		System.out.println(p1 - p2);
	}

}