#include <iostream>
#include <fstream>
#define DIM 100001

using namespace std;

fstream fin("scmax.in",ios::in);
fstream fout("scmax.out",ios::out);

unsigned long long n,a[DIM],l[DIM],poz[DIM];

int main()
{
    int i,j;
    fin>>n;
    for(i=1;i<=n;i++)
    {
        fin>>a[i];
    }

    l[n]=1; poz[n]=-1;
    for(i=n-1;i>=1;i--)
    {
        for(l[i]=1,poz[i]=-1,j=i+1;j<=n;j++)
        {
            if(a[i]<a[j]&&l[i]<l[j]+1)
            {
                l[i]=l[j]+1;
                poz[i]=j;
            }
        }
    }

    int max=l[1], pozmax=1;

    for(i=2;i<=n;i++)
    {
        if(max<l[i])
        {
            max=l[i];
            pozmax=i;
        }
    }

    fout<<max<<'\n';
   // fout<<"\nCel mai lung subsir:\n";

    for (i=pozmax; i!=-1; i=poz[i])
        fout<<a[i]<<' ';

}