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#include <bits/stdc++.h>
using namespace std;
int n , m;
int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    cin >> n;
    while(n > 0)
    {
        m ++;
        n -= __builtin_popcount(m);
    }
    n = abs(n);
    if(n == 0)
        cout << m << "\n";
    else
        cout << m - 1 << "\n";
    for(int i = m ; i >= 1 ; i --)
    {
        if(__builtin_popcount(i) != n)
            cout << i << " ";
        else
            n = 0;
    }
}