# include <fstream>
using namespace std;
int a[100001],poz[100001],l[100001];
int main()
{
    int n,i,max,j,max1=0,ok;
    freopen ("scmax.in","r",stdin);
    freopen ("scmax.out","w",stdout);
    scanf("%d",&n);
    for (i=1;i<=n;i++) scanf("%d",&a[i]);
    l[n]=1; poz[n]=-1;
    for (i=n-1;i>=1;i--)
    {
        ok=1;max=0;
        for (j=i+1;j<=n;j++)
        {
            if (a[i]<a[j])
            {
                ok=0;
                if (l[j]>max) max=l[j];
            }
        }
        if (ok==1) l[i]=1;
        else l[i]=max+1;
    }
    for (i=1;i<=n;i++) if (l[i]>max1) max1=l[i];
    printf("%d\n",max1);
    for (i=n-1;i>=1;i--)
    {
        max=0; poz[i]=-1;
        for (j=i+1;j<=n;j++)
        {
            if (a[i]<a[j] && l[j]>max)
            {
                max=l[j];
                poz[i]=j;
            }
        }
    }
    for (i=1;i<=n;i++)
    {
        if (l[i]==max1)
        {
            printf("%d ",a[i]);
            i=poz[i];
            break;
        }
    }
    while (poz[i]!=-1)
    {
        printf("%d ",a[i]);
        i=poz[i];
    }
    printf("%d ",a[i]);
    return 0;
}