#include<stdio.h>

int main(){
unsigned long long n,s=0;
scanf("%lld",&n);
unsigned long long a=2;
while (a<=2*n){
if (n%a>=a/2){
s+=n/a+1;
}
else{
s+=n/a;
}
a*=4;
}
printf("%lld",s);
return 0;
}