#include <fstream>
#include <iostream>
using namespace std;
#define MAX 100001

ifstream fin("scmax.in");
ofstream out("scmax.out");

int v[MAX], d[MAX], p[MAX], n, k;

void citire ()
{
    int i;
    fin>>n;
    for (i=1;i<=n;i++)
        fin>>v[i];
    fin.close();
}
void afisare (int k)
{
    while (k>0)
    {
        out<<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;
    }
    out<<d[max2]<<endl;
    afisare (max2);
}
int main()
{
    citire();
    dinamica();
    return 0;
}