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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...$){((cerr<<$<<"; "),...);}(x),cerr<<'\n'
#else
#define debug(...) {}
#endif

int main() {
	cin.tie(0)->sync_with_stdio(0);

    int n;
    cin >> n;
    vector<int> sum(n + 1), val(n + 1);
    FOR(i, 1, n) {
        val[i] = __builtin_popcount(i);
        sum[i] = sum[i - 1] + val[i];
    }
    debug(n, val, sum);
    vector<int> ans;
    int ptr = n;
    while (n > 0) {
        if (sum[ptr - 1] >= n) {
            --ptr;
        }
        else {
            ans.emplace_back(ptr);
            n -= val[ptr];
            --ptr;
        }
    }
    cout << ssize(ans) << '\n';
    for (auto e : ans)
        cout << e << ' ';
    cout << '\n';
}