#include <iostream>
#include <cstdio>
#include <algorithm>
using namespace std;
typedef long long ll;
#define rep(i,n) for(int i=0;i<(n);i++)

int main(void){
	ll n; cin >> n;
	ll tmp = n;
	ll an1 = 0, an2 = 2 * n;
	while(tmp > 0){
		an1 += tmp; tmp /= 2;
	}

	if(an2 - an1 >= 0) printf("%d\n", an2 - an1);
	else printf("%d\n", an1 - an2);
	return 0;
}