#include<iostream>

using namespace std;

int main(){
  long long int N;
  cin >> N;
  long long int a=N;
  long long int count =0;
  for(;a!=0;){
    count+=a;
    a/=2;
  }
  long long int count2=N*2;
  cout<<count2-count << endl;
  return 0;
}