#include <iostream>
#include <fstream>
#define N_MAX 100001

using namespace std;
ifstream in("scmax.in");
ofstream out("scmax.out");

long long int v[N_MAX], n, l[N_MAX], lmax, pre[N_MAX], pos;

void sol(int pos)
{
    if(pre[pos] >= 0) sol(pre[pos]);
    out << v[pos] << " ";
}

int main()
{
    in >> n;
    for(int i = 0; i < n; i++)
    {
        in >> v[i];
        l[i] = 1;
    }
    l[1] = 1;
    pre[1] = -1;
    pre[0] = -1;
    for(int i = 1; i < n; i++)
    {
        for(int j = 0; j < i; j++)
        {
            if(v[i] > v[j] && l[i] <= l[j])
            {
                l[i] = l[j] + 1;
                pre[i] = j;
            }
            else l[i] = 1;
            if(l[i] > lmax){ lmax = l[i]; pos = i; }
        }
    }
    out << lmax << '\n';
    sol(pos);
    return 0;
}