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

vector <int> ans;

int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    int n;
    cin >> n;
    int i = 1;
    while (n - __builtin_popcount(i) >= 0)
    {
        n -= __builtin_popcount(i);
        ans.push_back(i++);
    }

    if (n != 0)
    {
        ans.push_back(i);
        n -= __builtin_popcount(i);
        reverse(ans.begin(), ans.end());
        vector <bool> good(ans.size(), true);
        for (int j = 1; j < ans.size(); j++)
        {
            if (n + __builtin_popcount(ans[j]) <= 0)
            {
                n += __builtin_popcount(ans[j]);
                good[j] = false;
                if (n == 0) break;
            }
        }
        int xd = 0;
        for (auto x: good)
            xd += x;
        cout << xd << '\n';
        for (int j = 0; j < ans.size(); j++)
            if (good[j]) cout << ans[j] << ' ';
    }
    else
    {
        reverse(ans.begin(), ans.end());
        cout << ans.size() << '\n';
        for (auto i: ans)
            cout << i << ' ';
    }
}