#include <bits/stdc++.h>
using namespace std;

#define elo __builtin_popcount

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    int n;
    cin >> n;

    int cnt = 0, i = 1;
    while (cnt < n) {
        cnt += elo(i++);
    }
    int mx = i - 1;

    while (elo(--i) != cnt - n);

    cout << mx - (i > 0) << "\n";
    for (int j = mx; j >= 1; j--) {
        if (j != i) {
            cout << j << " ";
        }
    }
    cout << "\n";

    return 0;
}