//subsir nr consec max
#include <fstream>

using namespace std;
ifstream f("scmax.in");
ofstream g("scmax.out");
int lmax,lcur=1,a[100000],n,fr[100000],sir[100000][100],poz;
int main()
{f>>n;
for(int i=1;i<=n;i++)
f>>a[i];
fr[n]=1;
sir[n][1]=a[n];
for(int i=n-1;i>=1;i--)
{int maxcur=0,pozcur=-1;
for(int j=i+1;j<=n;j++)
{if(a[i]<a[j]&&fr[j]>maxcur)
{maxcur=fr[j];
pozcur=j;}}
if(pozcur==-1)
fr[i]=1;
else
{fr[i]=maxcur+1;
for(int j=1;j<=maxcur;j++)
sir[i][j]=sir[pozcur][j];
sir[i][fr[i]]=a[i];}
if(fr[i]>lmax)
{lmax=fr[i];
poz=i;}}
g<<lmax<<'\n';
for(int i=lmax;i>=1;i--)
g<<sir[poz][i]<<" ";



    return 0;
}