e

# include <bits/stdc++.h>
using namespace std;
long long f(long long n)
{
	long k = (n + 1) / 2;
	if (n == 0) return 0;
	return k * k + f(n / 2);
}
int main() {
	long long n;
	while (scanf("%lld", &n) != EOF) {
	  cout<<f(n)<<endl;
	}
	return 0;
}