#include <bits/stdc++.h>

using namespace std;

int main () {
	int n;
	cin>>n;
	int i = 0;
	while(n>0) {
		n-=__builtin_popcount(i);
		i++;
	}
	--i;
	//cout<<i<<endl;
	int p=0;
	int temp=n;
	int z=i;
	while (n<0) {
		if(n+__builtin_popcount(i)>0) {
			//cout<<i<<" ";

			p++;
		} else {
			n+=__builtin_popcount(i);
		}
		--i;
			
	}
	p+=i;
	cout<<p<<endl;
	while (temp<0) {
			if(temp+__builtin_popcount(z)>0) {
				cout<<z<<" ";
			} else {
				temp+=__builtin_popcount(z);
			}
			--z;
				
		}
	
	while(i>0) {
		cout<<i<<" ";
		--i;
	}
	cout<<endl;
}