#include <fstream>

#define nmax 100001

using namespace std;

FILE *fin=fopen("scmax.in","r");
ofstream fout("scmax.out");

int a[nmax],lg[nmax],urm[nmax];
int n,jmax,maxim;

void citire();
void dinamica();
void afisare();

int main()
{
    citire();
    dinamica();
    afisare();
    return 0;
}

void citire()
{
    int i;

    fscanf(fin,"%d",&n);
    for(i=1;i<=n;i++)
        fscanf(fin,"%d",&a[i]);
}

void dinamica()
{
    int i,j;

    lg[n]=1; urm[n]=0;

    for(i=n-1;i>=1;i--)
    {
        jmax=0; maxim=1;
        for(j=i+1;j<=n;j++)
            if(a[i]<a[j]&&1+lg[j]>maxim)
            {
                maxim=1+lg[j];
                jmax=j;
            }

        lg[i]=maxim; urm[i]=jmax;
    }

}

void afisare()
{
    int i,lgmax,imax;
    lgmax=lg[1]; imax=1;
    for(i=2;i<=n;i++)
    {
        if(lgmax<lg[i])
        {
            lgmax=lg[i];
            imax=i;
        }
    }

    fout<<lgmax<<'\n';

    for(i=imax;i;i=urm[i])
        fout<<a[i]<<' ';
}