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#include<bits/stdc++.h>

using namespace std;

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

    int n; cin >> n;
    int sum = 0;
    int k = 1;
    while (true) {
        sum += __builtin_popcount(k);
        if (sum >= n)
            break;
        k++;
    }

    vector<int> ans;
    for (int l = k; l >= 1; l--) {
        int bits = __builtin_popcount(l);
        if (sum - bits < n) {
            ans.push_back(l);
            n -= bits;
        } 
        sum -= bits;
    }

    cout << ans.size() << "\n";
    for (int x : ans)
        cout << x << " ";
    cout << "\n";
}