#include <iostream>
#include <vector>
#include <fstream>
#include <algorithm>

using namespace std;
#define dim 100009
#define pb push_back

ofstream out("scmax.out");

int n, v[dim];
int poz[dim], sc[dim];

void read();
void scmax();
int maxx,p;

int main()
{
    read();
    scmax();

    out << maxx << " ";
    out << '\n';
    int i = p;
    while(i != -1)
    {
        out << v[i] << " ";
        i = poz[i];
    }

    return 0;
}

void read()
{
    ifstream in("scmax.in");

    in >> n;
    for(int i = 1 ;i<=n; ++i)
        in >> v[i];
}

void scmax()
{
    sc[n] =1;
    poz[n] = -1;
    for(int i = n-1 ; i>=1; --i)
    {
        sc[i] = 1;
        poz[i] = -1;
        for(int j = i + 1; j<=n; ++j)
        {
            if(v[j] > v[i])
                if(sc[i] < sc[j] + 1)
                {
                    sc[i] = sc[j] + 1;
                    poz[i] = j;
                    if(sc[i] > maxx)
                    {
                        maxx = sc[i];
                        p = i;
                    }
                }
        }
    }
}