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#include <iostream>
#include <vector>

using namespace std;

int main() {
	int n;
	cin >> n;
	vector<int> inv_res;
	int moc = 0;
	for (int i = 1; moc < n; ++i) {
		inv_res.push_back(i);
		moc += __builtin_popcount(i);
		// cout << "popc: " << __builtin_popcount(i) << '\n';
	}

	if (moc > n) {
		// cout << inv_res.back() << '\n';
		moc -= __builtin_popcount(inv_res.back());
		inv_res.pop_back();
	}

	for (int i = inv_res.size() - 1; moc != n; --i) {
		moc += __builtin_popcount(inv_res[i] + 1) - __builtin_popcount(inv_res[i]);
		++inv_res[i];
	}

	cout << inv_res.size() << '\n';
	for (int i = inv_res.size() - 1; i >= 0; --i) {
		cout << inv_res[i] << ' ';
	}

	cout << '\n';

	return 0;
}