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#include<bits/stdc++.h>
using namespace std;
using LL=long long;
#define FOR(i,l,r) for(int i=(l);i<=(r);++i)
#define REP(i,n) FOR(i,0,(n)-1)
#define ssize(x) int(x.size())
template<class A,class B>auto&operator<<(ostream&o,pair<A,B>p){return o<<'('<<p.first<<", "<<p.second<<')';}
template<class T>auto operator<<(ostream&o,T x)->decltype(x.end(),o){o<<'{';int i=0;for(auto e:x)o<<(", ")+2*!i++<<e;return o<<'}';}
#ifdef DEBUG
#define debug(x...) cerr<<"["#x"]: ",[](auto...$){((cerr<<$<<"; "),...)<<'\n';}(x)
#else
#define debug(...) {}
#endif

int main() {
	cin.tie(0)->sync_with_stdio(0);
	int n;
	cin >> n;
	int x = 0, sum = 0;
	while (sum < n) {
		++x;
		sum += __builtin_popcount(x);
	}
	debug(x, sum);
	vector<int> odp;
	while (x) {
		if (__builtin_popcount(x) <= sum - n) {
			sum -= __builtin_popcount(x);
			--x;
			continue;
		}
		odp.emplace_back(x);
		--x;
	}
	cout << ssize(odp) << '\n';
	for (int i : odp)
		cout << i << ' ';
	cout << '\n';
}