#include <bits/stdc++.h>
using namespace std;
int f[1000005];
int main() {
  long long res = 0;
  int n, i, j, k, l, r;
  cin >> n;
  k = 1;
  while (k < n) k = (k << 1) + 1;
  l = k - n;
  r = n;
  f[0] = 0;
  while (r > 0) {
    for (i = l; i <= r; ++i) {
      f[i] = k - i;
      res += k;
    }
    r = l - 1;
    k = 1;
    while (k < r) k = (k << 1) + 1;
    l = k - r;
  }
  cout << res << endl;
  for (i = 0; i < n; ++i) cout << f[i] << " ";
  cout << f[n] << endl;
  return 0;
}
