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// clang-format off
#include <bits/stdc++.h>

using namespace std;

#define ALL(x) (x).begin(), (x).end()

template<class C> void mini(C &a5, C b5) { a5 = min(a5, b5); }
template<class C> void maxi(C &a5, C b5) { a5 = max(a5, b5); }

#ifdef LOCAL
const bool debug = true;
#else
const bool debug = false;
#define cerr if (true) {} else cout
#endif
// clang-format on

#define int long long
#define double long double

const int INF = 1e18;
const int mod = 1e9 + 7;
const int nax = 1e6 + 100;

int arr[nax];

int32_t main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    
    int n;
    cin >> n;
    for (int i = 1; i <= n; i++) {
		arr[i] = arr[i-1] + __builtin_popcountll(i);
	}
	
	vector<int> v;
	for (int i = n; i >= 0; i--) {
		if (arr[i] < n) {
			v.push_back(i+1);
			n -= __builtin_popcountll(i+1);
		}
	}
	
	cout << v.size() << "\n";
	for (int i : v) {
		cout << i << " ";
	}
	cout << "\n";
    
    return 0;
}/*

*/