#include <fstream>

using namespace std;
ifstream f("scmax.in");
ofstream g("scmax.out");
int n,i,Max,p,j,a[10005],l[100005],lmax,ult;
int main()
{
    f>>n;
    for (i=1; i<=n; i++)
        f>>a[i];
    l[n]=1;
    lmax=0;
    for (i=n-1; i>=1; i--)
    {
        Max=0;
        for (j=i+1; j<=n; j++)
            if (a[j]>a[i] && 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;
}