#include<bits/stdc++.h>
using namespace std;
constexpr int N=2e5+5;
int main(){
	int x;cin>>x;
	if(x==0) cout<<"8\n1 2 3 3 1 4 3 7\n";else
	if(x==1) cout<<"6\n1 1 4 5 1 4\n";
	else{
		vector<int> v;
		int c=0;
		while(x>1){
			c++;
			for(int i=1;i<=__lg(x);i++) v.push_back(c);
			x-=(1<<__lg(x))-1;
		}
		cout<<v.size()<<'\n';reverse(v.begin(),v.end());
		for(int x:v) cout<<x<<' ';cout<<'\n';
	}
}