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#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define eb emplace_back
#define mp make_pair
#define Fast_IO ios::sync_with_stdio(false);
#define DEBUG fprintf(stderr,"Running on Line %d in Function %s\n",__LINE__,__FUNCTION__)
//mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());
#define fir first
#define sec second
#define mod 998244353
#define ll long long
#define inf 0x3f3f3f3f
#define INF 0x3f3f3f3f3f3f3f3f
inline int read()
{
	char ch=getchar(); int nega=1; while(!isdigit(ch)) {if(ch=='-') nega=-1; ch=getchar();}
	int ans=0; while(isdigit(ch)) {ans=ans*10+ch-48;ch=getchar();}
	if(nega==-1) return -ans;
	return ans;
}
typedef pair<int,int> pii;
void print(vector<int> x){for(int i=0;i<(int)x.size();i++) printf("%d%c",x[i]," \n"[i==(int)x.size()-1]);}
#define N 1000005
#define popcnt(x) __builtin_popcount((x))
int f[N],n;
signed main()
{
	cin>>n; int ned=n;
	for(int i=1;i<=n;i++) f[i]=f[i-1]+popcnt(i);
	vector<int> ans;
	for(int i=n;i>=1;i--)
	{
		if(f[i-1]>=ned) {}
		else ans.pb(i),ned-=popcnt(i);
	}
	cout<<ans.size()<<endl;
	print(ans);
	return 0;
}