#include <fstream>
using namespace std;
ifstream f("scmax.in");
ofstream g("scmax.out");
int a[100001], l[100001], poz[100001], n, p, maxi;
void ReadData()
{
    f >> n;
    int i;
    for(i = 1; i <= n; i++)
        f >> a[i];
}
void Solve()
{
    maxi = 1, p = n;
    l[n] = 1;
    poz[n] = -1;
    int i, j;
    for(i = n - 1; i > 0; i--)
    {
        l[i] = 1;
        poz[i] = -1;
        for(j = i + 1; j <= n; j++)
            if(a[i] < a[j] and l[i] < l[j] + 1)
        {
            l[i] = l[j] + 1;
            poz[i] = j;
            if(l[i] > maxi)
            {
                maxi = l[i];
                p = i;
            }
        }
    }
}
void WriteData()
{
    g << l[p] << '\n';
    int i = p;
    while(i != -1)
    {
        g << a[i] << ' ';
        i = poz[i];
    }
}
int main()
{
    ReadData();
    Solve();
    WriteData();
}