#include <fstream>

using namespace std;

ifstream in("scmax.in");
ofstream out("scmax.out");

const int NMAX = 100000;

int lg[NMAX + 3], v[NMAX + 3], maxi, Next[NMAX + 3], poz;
int n;

void reconstituire()
{
    int i;
    i = poz;
    while(i != -1)
    {
        out << v[i] << " ";
        i = Next[i];
    }
}

int main()
{
    in >> n;
    for(int i = 1; i <= n; ++i)
        in >> v[i];
    lg[n] = 1;
    Next[n] = -1;
    maxi = 1;
    poz = n;
    int i, j;
    for(i = n - 1; i >= 1; --i)
    {
        lg[i]=1;
        Next[i] = -1;
        for(j = i + 1; j <= n; ++j)
            if(v[i] < v[j] and lg[i] < lg[j] + 1)
            {
                lg[i] = lg[j] + 1;
                Next[i] = j;
                if(lg[i] > maxi) maxi = lg[i], poz = i;
            }
    }
    out << maxi << endl;
    reconstituire();
    return 0;
}