#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
//using mint = modint1000000007;
//const int mod = 1000000007;
using mint = modint998244353;
const int mod = 998244353;
//const int INF = 1e9;
//const long long LINF = 1e18;
#define rep(i, n) for (int i = 0; i < (n); ++i)
#define rep2(i,l,r)for(int i=(l);i<(r);++i)
#define rrep(i, n) for (int i = (n-1); i >= 0; --i)
#define rrep2(i,l,r)for(int i=(r-1);i>=(l);--i)
#define all(x) (x).begin(),(x).end()
#define allR(x) (x).rbegin(),(x).rend()
#define endl "\n"
#define P pair<int,int>
template<typename A, typename B> inline bool chmax(A & a, const B & b) { if (a < b) { a = b; return true; } return false; }
template<typename A, typename B> inline bool chmin(A & a, const B & b) { if (a > b) { a = b; return true; } return false; }
int main() {
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	long long n; cin >> n;
	if (0 == n) {
		cout << -1 << endl;
		return 0;
	}
	set<long long>st;
	rep(i, 60) {
		if (!(1 & (n >> i))) continue;
		if (st.count(1LL << i))st.erase(1LL << i);
		else st.insert(1LL << i);
		if (0 != i) {
			if (st.count(1LL << (i - 1)))st.erase(1LL << (i - 1));
			else st.insert(1LL << (i - 1));
		}
	}
	cout << st.size() << endl;
	for (auto e : st)cout << e << " ";
	return 0;
}