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#include <iostream>
#include <vector>
using namespace std;

int countBits(int n) {
	int bits = 0;
	while (n > 0) {
		bits += (int)(n & 1);
		n /= 2;
	}
	return bits;
}

pair<int, int> kiedy[1000007]; // <jaka liczba, ile bitow>

int main() {
	
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	
	int n;
	cin>>n;
	
	int m = 0;
	int l = 1;
	while (m < n) {
		int bits = countBits(l);
		for (int j = 1; j <= bits && m <= n; j++) {
			m++;
			kiedy[m] = {l, bits};
		}
		l++;
	}
	
	vector<int> v;
	while (n > 0) {
		v.push_back(kiedy[n].first);
		n -= kiedy[n].second;
	}
	
	cout << v.size() << "\n";
	for (int i = 0; i < v.size(); i++) {
		cout << v[i] << " ";
	}
//	for (int i = 0; i <= n; i++) cout <<tab[i] <<" ";
	
}