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#include <bits/stdc++.h>

using namespace std;

vector<int> answer;

void Solve(int bits_num);

int main() {
    cin.tie(0);
    ios::sync_with_stdio(0);
    int bits_num;
    cin >> bits_num;
    Solve(bits_num);
    cout << answer.size() << endl;
    for (int i = 0; i < answer.size(); i++) {
        cout << answer[i] << " ";
    }
    cout << endl;
    return 0;
}

void Solve(int bits_num) {
    int iter = 1;
    while (bits_num > 0) {
        int bits = __builtin_popcount(iter);
        bits_num -= bits;
        answer.push_back(iter);
        iter++;
    }
    reverse(answer.begin(), answer.end());
    if (bits_num == 0) {
        return;
    }
    bits_num = -bits_num;
    for (int i = 1; i < answer.size(); i++) {
        if (__builtin_popcount(answer[i]) == bits_num) {
            answer.erase(answer.begin() + i);
            return;
        }
    }
}