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#include <iostream>
#include <bitset>
#include <vector>

using namespace std;

int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int a, b = 0, licz = 0, n = 0, s = 0;
    cin>>a;
    while(a > licz)
    {
        b++;
        licz += bitset<20>(b).count();
    }
    n = b;
    if(licz > a)
    {
        b--;
        while(licz !=(a + bitset<20>(b).count()))
        {
            b--;
        }
        s = b;
        cout<<n-1<<"\n";
    }
    else
        cout<<n<<"\n";
    for(int i = n; i > 0; i--)
    {
        if(i != s)
        {
            cout<<i<<" ";
        }
    }
}