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#include <stdio.h>
#include <time.h>
#include <math.h>
#include <stdlib.h>
#include <string.h>
#include <map> 
#include <string>
#include <vector>  
#include <iostream> 
#include <sstream> 
#include <queue>
#include <algorithm>
#include <assert.h>


using namespace std;

#define ll long long
#define PB 		push_back
#define FOR(a,start,end) 	for(int a=int(start); a<int(end); a++)
#define INF 		INT_MAX
#define SORT(a) 	sort(a.begin(),a.end()) 
#define CL(a,x) 		memset(a,x,sizeof(a))
#define REP(a,x)	for(int a=0;a<x;a++)
#define REP1(a,x)	for(int a=1;a<=x;a++)
#define MP 		make_pair



typedef vector<ll>     vi;
typedef pair<ll, ll>     pii;
typedef vector<string> vs;
typedef vector<pii> vii;
typedef vector<vector<ll> > vvi;
typedef vector<vector<string> > vvs;
typedef vector<pair<string, string> > vss;
typedef pair<string, string> pss;
typedef pair<ll, pii> ppii;
typedef vector<ppii> vppii;
typedef vector<vector<pii> > vvii;
typedef vector<vvi> vvvi;


ll  n, k, q, d, r, g, b, z, p, a, c;
char zn;

string wa;
vi vk, va;
vvi vvk, vva;

ll ilb(ll a) {
	ll z = 0;
	while (a > 0) {
		z += a % 2;
		a /= 2;
	}
	return z;
}

int main() {
	//freopen("c:\\wojtek\\uva\\pa\\debug\\1.in", "rt", stdin);
	//d = 1000000007;

	//while (1) {

	cin >> n ;
	vk.clear();
	k = 1;
	while (n > 0) {
		a = ilb(k);
		if (a <= n) {
			vk.push_back(k++);
			n -= a;
		}
		else {
			vk.push_back(k);
			a -= n;
			int i = vk.size() - 2;
			while ((i >= 0) && (a > 0)) {
				b = ilb(vk[i]);
				if (b <= a) {
					a -= b;
					vk.erase(vk.begin() + i);
				}
				i--;
			}
			n = 0;
		}
	}
	cout << (int)vk.size() << endl;
	for (int i = (int)vk.size() - 1; i >= 0; i--) {
		cout << vk[i] << " ";
	}
	cout << endl;

	// }

	return 0;

}