#include <bits/stdc++.h>

using namespace std;

#define MAX_N 2000007

int n, mass, it;
int counta[MAX_N];
vector<int> v;

void sito(int x) {
    for (int i = 0; i <= x; i++) {
        if(i % 2 == 0) {
            counta[i+1] = counta[i] + 1;
        }
        counta[i*2] = counta[i];
    }
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin >> n;
    sito(n);
    mass = 0;
    it = 0;
    while (mass < n) {
        mass += counta[it];
        it++;
    }
    it--;
    while (n > 0) {
        if (n - counta[it] >= 0 && mass - counta[it] < n) {
            n -= counta[it];
            v.push_back(it);
        }
        mass -= counta[it];
        it--;
    }
    cout << v.size() << "\n";
    for (auto i : v) {
        cout << i << " ";
    }
}