#include<fstream>
using namespace std;
ifstream f("scmax.in");
ofstream fout("scmax.out");
int i, j, n, x[1000], scm[1000], d[1000], mx, pmx;
void display(int i)
{ if(d[i]) display(d[i]);
  fout<<x[i]<<' ';
}
int main(){
f>>n;
int max=0;
for(i=1;i<=n;i++)f>>x[i];
for(i=1;i<=n;i++) { max=0;
                      for(j=i-1;j;j--)if(x[i]>x[j]&&max<scm[j])max=scm[j],d[i]=j;
                      scm[i]=max+1;
                      if(mx<scm[i])mx=scm[i],pmx=i;
                    }
fout<<mx<<'\n';
display(pmx);
f.close();
fout.close();
return 0;
}