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#include <bits/stdc++.h>
using namespace std;

int n, sum;

int main(){
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	
	cin >> n;
	
	int i = 0;
	while(n >= sum){
		i++;
		sum += __builtin_popcount(i);
	}
	
	cout << i-1 << '\n';
	
	while(i > 0){
		if(sum > n && __builtin_popcount(i) == sum-n){
			sum -= __builtin_popcount(i);
			i--;
			continue;
		}
		cout << i << ' ';
		i--;
	}
	
	return 0;
}