# include <iostream>
# include <fstream>

using namespace std;

fstream f("scmax.in",ios::in);
fstream g("scmax.out",ios::out);

long l[100000],poz[100000],a[100000],n,i,j,m;
int main()
{
    f>>n;
    for (i=1;i<=n;i++)
        f>>a[i];
    l[n]=1;poz[n]=-1;m=n;
    for (i=n-1;i>0;i--)
    {
        l[i]=1;poz[i]=-1;
        for (j=i+1;j<=n;j++)
            if(l[i]<1+l[j] && a[i]<a[j])
            {
                l[i]=1+l[j];
                poz[i]=j;
            }
            if (l[i]>l[m]) m=i;
    }
    g<<l[m]<<"\n";
    i=m;
    while (i!=-1)
    {g<<a[i]<<" ";i=poz[i];}
f.close();
g.close();
return 0;
}