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#include<bits/stdc++.h>
#define fi first
#define se second
using namespace std;
int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);
	int n;
	cin>>n;
	int k=0;
	int s=0;
	while(s<n)
	{
		k++;
		s+=__builtin_popcount(k);
	}
	vector<int> ans;
	while(k>0)
	{
		if(s-__builtin_popcount(k)>=n)
			s-=__builtin_popcount(k);
		else
			ans.push_back(k);
		k--;
	}
	cout<<ans.size()<<"\n";
	for(auto v:ans)
		cout<<v<<" ";
	cout<<"\n";
	return 0;
}