#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (n); ++i)
using ll = long long;
using ull = unsigned long long;

int main() {
  cin.tie(nullptr)->sync_with_stdio(false);
  int n;
  cin >> n;
  int ans = 0;
  for (unsigned a = 0; a <= n; ++a) {
    for (unsigned b = a; b <= n; ++b) {
      if (popcount(a) == popcount(b)) ans += a & b;
    }
  }
  cout << ans << '\n';
  return 0;
}