#include <fstream>
using namespace std;
ifstream fin("scmax.in");
ofstream fout("scmax.out");
int n,a[100001],t[100001],mx[100001],M,rez[100001],i,j,q,x;
int main()
{fin>>n;
 M=1;
 for(i=1;i<=n;i++)
    fin>>a[i];
 for(i=1;i<=n;i++)
    {mx[i]=1;
     for(j=1;j<=i-1;j++)
        if((mx[j]+1>mx[i])&&(a[i]>a[j])){mx[i]=mx[j]+1;t[i]=j;
                          if(M<mx[i]){M=mx[i];q=i;}
                         }
    }
 fout<<M<<"\n";
 i=q;
 x=0;
 while(i!=0)
      {x++;
       rez[x]=a[i];
       i=t[i];
      }
 for(i=x;i>=1;i--)
    fout<<rez[i]<<" ";
}