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// #pragma GCC optimize("O3")
// #pragma GCC optimize("Ofast")
// #pragma GCC optimize("unroll-loops")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")

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

#define rep(i, n) for(int i = 0; i < n; i++)
#define pb push_back
#define debug(x) cout << #x << " " << x << endl
#define all(x) x.begin(),x.end()
#define ll long long
#define vi vector<int>
#define vvi vector<vi>
#define vvvi vector<vvi>
#define vll vector<ll>
#define vvll vector<vll>
#define ld long double
#define ull unsigned long long
#define vull vector<ull>
#define fi first
#define se second
#define PII pair<int,int>
#define vPII vector<PII>
#define getunique(v) {sort(v.begin(), v.end()); v.erase(unique(v.begin(), v.end()), v.end());}
#define int128 __int128

int tab[1000005];

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
	cout << setprecision(16) << fixed;
//    freopen("input.txt", "r", stdin);
//    freopen("output.txt", "w", stdout);
    int tt = 1;
    // cin >> tt;
    while(tt--) {
		int n; cin >> n;
		tab[0] = 0;
		int i = 1;
		int cur = 0;
		while(cur < 1e6){
			cur += __builtin_popcount(i);
			tab[i++] = cur;
		}
		int l = 1, r = i-1;
		while(l < r){
			int mid = (l+r)/2;
			if(tab[mid] >= n){
				r = mid;
			}else{
				l = mid+1;
			}
		}
		int ile = tab[l]-n;
		// cout << l << "\n";
		if(ile == 0){
			cout << l << "\n";
			for(int j = l; j > 0; j--) cout << j << " ";
		}else{
			vi out;
			for(int j = l; j > 0; j--){
				if(__builtin_popcount(j) <= ile){
					ile -= __builtin_popcount(j);
				}else{
					out.pb(j);
				}
			}
			cout << out.size() << "\n";
			for(int x : out) cout << x << " ";
		}
    }
}