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

int n, a[100005], nou[100005],maxi, poz[100005],p;

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

void constr()
{
    int i=p;
    while (i>=0)
    {
        g << a[i] <<' ';
        i=poz[i];
    }
   /* for (int i=1; i<=n; i++)
    {
        cout << poz[i] <<' ';
    }*/
}

void dinamic()
{
    p=n;
    poz[n]=-1;
    nou[n]=1;
    for (int i=n-1; i>=1; i--)
    {
        nou[i]=1;
        poz[i]=-1;
        for (int j=i+1; j<=n; j++)
        {
            if (a[i]<a[j] && nou[j]+1>nou[i])
            {
                poz[i]=j;
                nou[i]=nou[j]+1;
                if (nou[i]>maxi)
                    maxi=nou[i], p=i;
                //break;
            }
        }
    }
    g << maxi<<endl;
    constr();
}

int main()
{
    f>>n;
    for (int i=1; i<=n; i++)
    {
        f >> a[i];
    }
    dinamic();
    return 0;
}