#include <fstream>
using namespace std;
ifstream f ("scamx.in");
ofstream g ("scmax.out");
int n,i,a[1001],l[1001],lmax,Max,p,ult,j;
int main()
{
    f>>n;
    for(i=1;i<=n;i++)
    {
        f>>a[i];
    }
    lmax=0;
    l[n]=1;
    for(i=n-1;i>=1;i--)
    {
        Max=0;
        for(j=i+1;j<=n;j++)
        {
            if(a[i]<a[j] && Max<l[j])
            {
                Max=l[j];
            }
        }
        l[i]=Max+1;
        if(lmax<l[i])
        {
            lmax=l[i];
            p=i;
        }
    }
    g<<lmax<<'\n';
    ult=a[p]-1;
    for(i=p;i<=n;i++)
    {
        if(a[i]>ult && l[i]==lmax)
        {
           g << a[i] << " ";
           ult=a[i];
           lmax--;
        }
    }
    return 0;
}