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

int t[1000005];

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

	int n;
	cin >> n;
	int x = 0;
	int i;
	for (i = 1; x <= n; i++) {
		x += __builtin_popcount(i);
		t[i] = x;
	}
	int m = 0;
	vector<int> v;
	while (i >= 2) {
		while (i >= 2 && t[i-1] >= n) {
			i--;
		}
		m++;
		v.push_back(i);
		n -= __builtin_popcount(i);
	}
	
	cout << m << "\n";
	for (auto el : v)
		cout << el << " ";

	return 0;
}