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#include<iostream>
#include<vector>
using namespace std;
int main()
{
	int n;
	int wartosc;
	int k;
	vector<int> sumy;
	vector<int> wynik;
	sumy.push_back(0);
	cin >> n;
	for (int i = 1; i < 130001; i++)
	{
		wartosc = 0;
		k = i;
		while (k > 0)
		{
			if (k % 2 == 1)
				wartosc++;
			k /= 2;
		}
		sumy.push_back(sumy[i-1]+wartosc);
	}
	k = 130000;
	while (k > 0)
	{
		if (sumy[k] < n)
		{
			wynik.push_back(k + 1);
			n -= (sumy[k+1]-sumy[k]);
		}
		k--;
	}
	if (n == 1)
		wynik.push_back(1);
	cout << wynik.size()<<"\n";
	for (int i = 0; i < wynik.size(); i++)
		cout << wynik[i] << " ";
	return 0;
}