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#include<bits/stdc++.h>
using namespace std;
int ile_bitow[1000006];
long long suma[1000006];
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n;
    cin >> n;
    for (int i = 1; i <= n; i++) {
        int x = i;
        while (x > 0) {
            if (x%2 == 1)
            ile_bitow[i]++;
            x /= 2;
        }
    }
    for (int i = 1; i <= n; i++) {
        suma[i] = suma[i-1] + ile_bitow[i];
    }
    vector <int> result;
    int start = n;
    while (n > 0) {
        int cand = n;
        for (int i = start; i >= 0; i--) {
            if (suma[i] >= n) {
                cand = i;
            }
            else
            break;
        }
        result.push_back(cand);
        n -= ile_bitow[cand];
        start = cand - 1;
    }
    cout << result.size() << "\n";
    for (int i = 0; i < result.size(); i++)
        cout << result[i] << " ";
    return 0;
}