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#if defined(EMBE_DEBUG) && !defined(NDEBUG)
#include "embe-debug.hpp"
#else
#define LOG_INDENT(...) do {} while (false)
#define LOG(...) do {} while (false)
#define DUMP(...) do {} while (false)
#endif

#include <vector>
#include <iostream>
using namespace std;

namespace {
}

int main()
{
  iostream::sync_with_stdio(false);
  cin.tie(nullptr);

  int n;
  cin >> n;

  vector<int> res;

  int total = 0;
  int i = 0;
  vector<int> sums;
  while (total < n) {
    total += __builtin_popcount(i);
    sums.push_back(total);
    i += 1;
  }
  --i;

  res.push_back(i);
  n -= __builtin_popcount(i);

  while (n > 0) {
    while (sums[i] >= n) --i;
    ++i;
    res.push_back(i);
    n -= __builtin_popcount(i);
    --i;
  }

  cout << res.size() << '\n';
  bool first = true;
  for (auto const& x: res) {
    if (first) first = false;
    else cout << ' ';
    cout << x;
  }

  cout << endl;

  return 0;
}