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#include <bits/stdc++.h>
#define dbg(x) " [" << #x << ": " << (x) << "] "
using namespace std;
template<typename A, typename B>
ostream& operator<<(ostream& out, const pair<A,B>& p) {
    return out << "(" << p.first << ", " << p.second << ")";
}
template<typename T>
ostream& operator<<(ostream& out, const vector<T>& c) {
    out << "{";
    for(auto it = c.begin(); it != c.end(); it++) {
        if(it != c.begin()) out << ", ";
        out << *it;
    }
    return out << "}";
}
int get(int n) {
    int r = 0;
    while(n) {
        r += n & 1;
        n /= 2;
    }
    return r;
}
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n;
    cin >> n;
    long long sum = 0;
    vector<int> v(2e5);
    vector<long long> s(2e5);
    for(int i = 1; i < 2e5; i++) {
        v[i] = get(i);
        s[i] = s[i - 1] + v[i];
    }
    vector<int> ans;
    for(int i = 2e5-1; i >= 1; i--) {
        if(s[i] >= n && s[i - 1] < n) {
            ans.push_back(i);
            n -= v[i];
        }
    }
    cout << ans.size() << endl;
    for(int i = 0; i < ans.size(); i++) {
        if(i) cout << " ";
        cout << ans[i];
    }
    cout << endl;
    return 0;
}