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#include <bits/stdc++.h>
using namespace std;

int main()
{
    ios_base::sync_with_stdio(0);
    vector<int> v;
    int n;
    cin >> n;

    for (int i = 1; n > 0; n -= __builtin_popcount(i), i++)
    {
        v.push_back(i);
    }
    for (int i = v.size() - 1; i >= 0; i--)
    {
        if (__builtin_popcount(v[i]) == abs(n))
        {
            v.erase(v.begin() + i);
            break;
        }
    }
    reverse(v.begin(), v.end());
    cout << v.size() << '\n';
    for (auto i : v)
        cout << i << ' ';
    cout << '\n';
}