#include<fstream>
using namespace std;

ifstream fin("scmax.in");
ofstream fout("scmax.out");

int n,i,v[100002],j,w[100002],sol,lung;

int main()
{
    fin>>n;
    for(i=1;i<=n;++i)
    fin>>v[i];
    w[n]=1;
    for(i=n-1;i;--i)
    {
        w[i]=1;
        for(j=i+1;j<=n;++j)
        {
            if(w[i]<w[j]+1&&v[j]>v[i])
            {
                w[i]=w[j]+1;
                if(w[i]>lung)
                {
                    lung=w[i];
                    sol=i;
                }
            }
        }
    }
    fout<<lung<<'\n';
    for(i=sol;i<=n;++i)
    {
        if(w[i]==lung)
        {
            fout<<v[i]<<" ";
            lung--;
        }
    }


    return 0;
}