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

#define ll long long
#define pb push_back

int main(){
    
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    
    int n; cin >> n;
    
    int cnt = 0;
    int k = 0;
    while(cnt < n){
        cnt += __builtin_popcount(k);
        k++;
    }
    k--;
    
    vector <int> V;
    while(k > 0){
        if(__builtin_popcount(k) == (cnt-n)){
            cnt = n;
        }
        else V.pb(k);
        k--;
    }
    
    cout << V.size() << "\n";
    for(auto x: V) cout << x << " ";
    cout << "\n";
    
}