package test.wangyi;

import java.util.Scanner;

/**

 * 

 * Description: netease coding test 2.

 */

public class Main2 {

public static void solve() {

Scanner reader = new Scanner(System.in);

while(reader.hasNext()) {

long N = Integer.parseInt(reader.nextLine());

long count = 0;

count = deal(N);

System.out.println(count);

}

reader.close();

}

public static long deal(long N) {

if(N == 1) {

return 1L;

}

if(N % 2 != 0) {

long part = (1 + N) * (N + 1) / 4;

return part + deal((N - 1) / 2);

} else {

long part = N * N / 4;

return part + deal(N / 2);

}

}

   public static void main(String[] args) {

 Main2.solve();

  }

}