#include <iostream>
#include <fstream>
using namespace std;

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

int n, arr[100001], poz[100001], L[100001], Max ,  p;

void Read()
{
    in >> n;
    for(int i = 1; i <= n; ++i)
        in >> arr[ i ];
}

void Solve()
{
    poz[n] = -1;
    L[n] = 1;
    for(int i = n - 1; i >= 1; --i)
    {
        poz[i] = -1, L[i] = 1;
        for(int j = i + 1; j <= n; ++j)
        {
            if(arr[i] < arr[j] && L[j] + 1 > L[i])
            {
                poz[i] = j;
                L[i] = L[j] + 1;

            }
        }
    }

}

void Print()
{
    int i;
    p = n;
    for(i = 1; i <= n; ++i)
    {
        if(L[i] > Max)
        {
            Max = L[i];
            p = i;
        }
    }

     i = p;
    out << Max << '\n';
    while(i != -1)
    {
        out << arr[i] << ' ';
        i = poz[i];
    }
}

int main()
{
    Read();
    Solve();
    Print();
}