#include <fstream>
#define dmax 100010

using namespace std;

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

int n;
int a[dmax];
int lg[dmax];
int urm[dmax];

void citire();
void rez();

int main()
{
    citire();
    rez();
    return 0;
}

void citire()
{
    int i;
    fin>>n;
    for (i=1; i<=n; i++)
        fin>>a[i];
}

void rez()
{
    int i, j, pozmax, maxim;
    lg[n]=1;
    //urm[n]=1;
    for (i=n-1; i>=1; i--)
    {
        maxim=1;
        pozmax=0;
        for (j=i+1; j<=n; j++)
        {
            if (a[j]>=a[i])
                if (lg[j]+1>maxim)
                {
                    maxim=lg[j]+1;
                    pozmax=j;
                }
        }
        lg[i]=maxim;
        //urm[i]=pozmax;
    }
    ///caut maximul
    maxim=0;
    for (i=1; i<=n; i++)
        if (lg[i]>maxim)
        {
            maxim=lg[i];
            pozmax=i;
        }
    fout<<maxim<<'\n';
    for (i=pozmax; i!=0; i=urm[i])
        fout<<a[i]<<' ';
}