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

stack<pair<int, int>> s;
int n;

vector<int> res;

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

    cin >> n;
    for(int i = 1; n > 0; i++) {
        pair<int, int> p = {i, __builtin_popcount(i)};
        s.push(p);
        n -= p.second;
    }

    n = -n;

    while(!s.empty()) {
        pair<int, int> p = s.top();
        s.pop();

        if(n >= p.second) n -= p.second;
        else res.emplace_back(p.first);
    }

    cout << res.size() << endl;
    for(int i : res) cout << i << " ";
    cout << endl;
}