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#include <iostream>
#include <vector>

using namespace std;

#define pc __builtin_popcount

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

	int n;
	cin >> n;

    int t = 0, i = 0;
    while (t < n)
        t += pc(++i);

    t -= n;
    vector<int> V;
    while (i) {
        if (pc(i) <= t)
            t -= pc(i--);
        else
            V.push_back(i--);
    }

    cout << V.size() << '\n';
    for (auto& v : V)
        cout << v << ' ';
}