#include <fstream>
#define NMAX 100005
using namespace std;
ifstream fin("scmax.in");
ofstream fout("scmax.out");
int n,i,a[NMAX],ur,lg[NMAX],urm[NMAX],j,maxi=-1,indi;
void citire()
{
    fin>>n;
    for(i=1;i<=n;i++)
        fin>>a[i];
}
void pd()
{
   lg[n]=1; urm[n]=0; maxi=1;
   for(i=n-1;i>=1;i--)
     for(j=i+1;j<=n;j++)
   {
     if(a[i]<a[j] && lg[j]+1>lg[i])
     {
         lg[i]=lg[j]+1;
         urm[i]=j;
     }
     if(lg[i]>maxi) maxi=lg[i],indi=i;
   }
}
void afisare()
{
    fout<<maxi<<'\n';
    fout<<a[indi]<<' ';
    while(urm[indi])
    {
        fout<<a[urm[indi]]<<' ';
        indi=urm[indi];
       /// urm
    }
}
int main()
{
   citire();
   pd();
   afisare();

    return 0;
}