#include <fstream>
#define NMAX 100001
using namespace std;

int a[NMAX],l[NMAX],poz[NMAX];

int main()
{
    ifstream f("scmax.in");
    ofstream g("scmax.out");
    int n,i,maxi=0,max=0,j;
    f>>n;
    for (i=1;i<=n;i++)
    {
        f>>a[i];
    }
    l[n]=1; poz[n]=-1;
    for (i=n-1;i>=1;i--)
    {
        l[i]=1;
        poz[i]=-1;
        for (j=i+1;j<=n;j++)
        {
            if ((a[i]<a[j])&&(l[j]+1>l[i]))
            {
                l[i]=l[j]+1;
                poz[i]=j;
            }
        }
        if (l[i]>max)
        {
            max=l[i];
            maxi=i;
        }
    }
    i=maxi;
    g<<max<<"\n";
    while (poz[i]!=-1)
    {
        g<<a[i]<<" ";
        i=poz[i];
    }
    g<<a[i]<<" ";
    return 0;
}