#include<fstream>
#include<iostream>
#include<algorithm>
using namespace std;
int N,i;
int v[20];

int main()
{
    cin>>N;
    //cout<<(1<<16);
    i=0;
    while ((1<<i)<=N)
    {
        v[++v[0]]=(1<<i);
        ++i;
    }
    cout<<v[0]<<'\n';
    for (i=1;i<=v[0];++i)
        cout<<v[i]<<' ';
    return 0;
}