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//
//  main.cpp
//  Muzyka pop 2
//
//  Created by Mikołaj Małysz on 13/12/2022.
//

#include <iostream>
#include <vector>

using namespace std;

unsigned int countSetBits(unsigned int n)
{
    unsigned int count = 0;
    while (n) {
        count += n & 1;
        n >>= 1;
    }
    return count;
}

int main(int argc, const char * argv[]) {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n;
    cin >> n;
    bool run = true;
    vector<int> v = {};
    int current = 1;
    int sum = 0;
    while (run) {
        sum += countSetBits(current);
        v.push_back(current);
        current++;
        if (sum >= n) {
            break;
        }
    }
    int diff;
    if (sum > n) {
        diff = sum-n;
        for(long i = v.size() - 1; i >= 0; i--){
            if (countSetBits(v[i]) == diff) {
                v.erase(v.begin() + i);
                break;
            }
        }
    }
    cout << v.size() << endl;
    for (auto it = v.rbegin(); it != v.rend(); it++){
        // Print each element
        cout << *it << ' ';
    }
    cout << '\n';
    return 0;
}