#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <math.h>
int main(void)
{
    long long int renown,normal=0,max,dif,val;
    scanf("%lld",&renown);
    max=renown*2;
    while(renown)
    {
        normal+=renown;
        renown/=2;
    }
    dif=max-normal;
    printf("%lld",dif);


}