#include <bits/stdc++.h>

constexpr int LIMIT = 120'225;
int BIT_SUM[LIMIT];
int PREFIX_SUM[LIMIT];
std::vector<int> OUTPUT;

void make_bit()
{
    int sum = 0;
    for (int i = 1; i < LIMIT; ++i)
    {
        int temp = i;
        while (temp) {
            if (temp & 1)
                ++BIT_SUM[i];
            temp >>= 1;
        }
        sum += BIT_SUM[i];
        PREFIX_SUM[i] = sum;
    }
}

int main()
{
    make_bit();
    
    int n;
    std::cin >> n;
    int x = 0;
    while (PREFIX_SUM[x] < n)
        ++x;

    while (n > 0)
    {
        if (n > PREFIX_SUM[x - 1])
        {
            n -= BIT_SUM[x];
            OUTPUT.push_back(x);
        }
        --x;
    }
    std::cout << OUTPUT.size() << '\n';
    for (auto& i : OUTPUT)
        std::cout << i << ' ';
}