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#include <iostream>
#include <vector>

using namespace std;

void prep(vector<int>& ones) {
    ones[0] = 0;
    int N = ones.size() - 1;
    for(int i = 1; i <= N; ++i) {
        ones[i] = ones[i / 2] + i % 2;
    }
}

int main() {
    ios_base::sync_with_stdio(0);
    int n;
    cin >> n;
    vector<int> ones(n + 1);
    prep(ones);
    vector<int> result;
    long long sum = 0;
    for(int i = 1; i < n + 1; ++i) {
        int num = ones[i];
        sum += num;
        result.push_back(i);
        if(sum > n) break;
    }
    int toRemove = sum - n;
    if(toRemove > 0) {
        for(int i = result.size() - 1; i >= 0; --i) {
            if(ones[i + 1] == toRemove) {
                result.erase(result.begin() + i);
                break;
            }
        }
    }
    cout << result.size() << "\n";
    for(int i = result.size() - 1; i >= 0; --i) {
        cout << result[i] << " ";
    }
    cout << "\n";
}