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#include<cstdio>
#include<iostream>
#include<iomanip>
#include<algorithm>
#include<string>
#include<vector>
#include<cmath>
#include<set>
#include<stack>

using namespace std;

typedef vector<int> VI;
typedef long long LL;
typedef vector<LL> VLL;
typedef pair<int, int> PII;
typedef vector<PII> VPII;

#define FOR(x, b, e) for(int x=b; x<=(e); ++x)
#define FORD(x, b, e) for(int x=b; x>=(e); --x)
#define REP(x, n) for(int x=0; x<(n); ++x)
#define VAR(v, n) __typeof(n) v = (n)
#define ALL(c) (c).begin(), (c).end()
#define SIZE(x) ((int)(x).size())
#define FOREACH(i, c) for(VAR(i, (c).begin()); i != (c).end(); ++i)
#define PB push_back
#define ST first
#define ND second

int ones(int a) {
    int i = 1;
    int result = 0;
    while (i <= a) {
        if ((a & i) > 0) result++;
        i <<= 1;
    }
    return result;
}

void print(VPII &v) {
    for (auto x : v) cout << x.first << ": " << x.second << '\n';
}

int main() {
	ios_base::sync_with_stdio(0);
    cin.tie(NULL); cout.tie(NULL);
    int n;
    cin >> n;
    VPII sounds;
    int count = 0;
    int i = 1;
    while (count < n) {
        PII s = { i, ones(i) };
        count += s.second;
        sounds.PB(s);
        i++;
    }
    i = sounds.size() - 1;
    int diff = count - n;
    int removed = 0;
    while (diff > 0) {
        if (sounds[i].second <= diff) {
            diff -= sounds[i].second;
            sounds[i].second = 0;
            removed++;
        }
        i--;
    }
    i = sounds.size() - 1;
    cout << sounds.size() - removed << '\n';
    while (i >= 0) {
        if (sounds[i].second > 0) cout << sounds[i].first << ' ';
        i--;
    }
    cout << '\n';
    return 0;
}