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#include<bits/stdc++.h>

#define st first
#define nd second
#define pb(x) push_back(x)
#define pp(x) pop_back(x)
#define mp(a, b) make_pair(a, b)
#define all(x) (x).begin(), (x).end()
#define rev(x) reverse(all(x))
#define sor(x) sort(all(x))
#define sz(x) (int)(x).size()
#define rsz(x) resize(x)

using namespace std;

typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
typedef vector<pii > vii;
typedef vector<ll> vl;
typedef vector<pll> vll;
typedef string str;
#define BOOST ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL); 
const int MK = 500009; 
int zapal[MK]; 
int pref[MK]; 
void build(){ 
	pref[0] = 0; 
	zapal[0] = 0; 
	for(int i = 1; i < MK; i++){ 
		zapal[i] = __builtin_popcount(i); 
		pref[i] = pref[i-1] + zapal[i]; 
	} 
	
}  
int n ; 
void run(){ 
	cin >> n; 
	int ind = MK -1 ;  
	vi ans; ans.reserve(10000); 
	while(n > 0){ 
		while(pref[ind-1] >= n) 
			ind--; 
		ans.pb(ind);
		n -= zapal[ind]; 
		ind--; 
	} 
	cout << sz(ans) << "\n"; 
	for(auto x : ans) 
		cout << x << ' '; 
}
int main(){  
	BOOST
	build(); 
	run(); 
}