#include <fstream>
#include <cmath>
using namespace std;
ifstream fin("scmax.in");
ofstream fout("scmax.out");
int n,v[100001],len[100001],ant[100001],lmax,pmax;
int main()
{
    fin >> n;
    for(int i=1;i<=n;i++)
        fin >> v[i];

    for(int i=n;i>=1;i--)
    {
        len[i]=1;
        ant[i]=-1;
        for(int j=i;j<=n;j++)
        {
            if(v[j]>v[i])
            {
                if(len[i]<len[j]+1)
                {
                    len[i]=len[j]+1;
                    ant[i]=j;
                }
            }
        }
        if(len[i]>lmax)
        {
            lmax=len[i];
            pmax=i;
        }
    }
    fout << lmax << "\n";
    while(pmax!=-1)
    {
        fout << v[pmax] << " ";
        pmax=ant[pmax];
    }
    return 0;
}