#include <iostream>
#include <fstream>
#include <algorithm>
#include <vector>
#include <cstring>
#include <map>
#include <queue>

#define maxn 1010
#define inf (1<<30)
using namespace std;

ifstream fin("A.in");
ofstream fout("A.out");

int n,t,v[maxn];

int main ()
{
    cin >> n;

    v[++t] = 1;
    long long s = 1;

    while (s <= n)
    {
        v[++t] = s+1;
        s = s + s + 1;
    }

    cout << t << "\n";

    for (int i = 1; i <= t; ++i)
    {
        cout << v[i] << " ";
    }
}