#include <fstream>
int v[100001], d[100001], p[100001], n, k;
using namespace std;
ifstream cin("scmax.in");
ofstream cout("scmax.out");
void citire ()
{
    int i;
    cin>>n;
    for (i=1; i<=n; i++) cin>>v[i];
}
void afisare (int k)
{
    while (k>0)
    {
        cout<<v[k]<<" ";
        k=p[k];
    }
}
void dinamica ()
{
    int i, j, max, max2=n, poz;
    d[n]=1;
    p[n]=0;
    for(i=n-1;i>=1;--i)
    {
        poz=0;
        max=0;
        for (j=i+1; j<=n; j++)
            if (v[i]<v[j] && d[j]>max)
            {
                max=d[j];
                poz=j;
            }
        d[i]=1+max;
        p[i]=poz;
        if (d[i]>d[max2]) max2=i;
    }
    cout<<d[max2]<<endl;
    afisare (max2);
}
int main()
{
    citire();
    dinamica();
    return 0;
}