#include<iostream>
#include<algorithm>
using namespace std;
#define NMAX 1000006
int n,P[NMAX];
int main()
{
    int i,j;
    cin>>n;
    for (i=2;i<=n;++i)
        P[i]=1+P[i>>1];
    cout<<P[n]+2<<"\n";
    for (i=0;i<=P[n]+1;++i)
        cout<<(1<<i)<<" ";
    cout<<"\n";
    return 0;
}