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#include <bits/stdc++.h>
using namespace std;
vector<int>v;
int main()
{
    int s=0,x=0;
    int n;
    cin >> n;
    while(n>s)
    {
        x++;
        s+=__builtin_popcount(x);
        v.push_back(x);
    }
    if(s==n)
    {
        cout << v.size() << "\n";
        for(int i=v.size()-1;i>=0;i--)
        {
            cout << v[i] << " ";
        }
    }
    else
    {
        for(int i=v.size()-1;i>=0;i--)
        {
            if(s-__builtin_popcount(i)==n)
            {
                v.erase(v.begin()+i-1);
                break;
            }
        }
        cout << v.size() << "\n";
        for(int i=v.size()-1;i>=0;i--)
        {
            cout << v[i] << " ";
        }
    }
    return 0;
}