#include <fstream>
#define NMAX 100001
using namespace std;
ifstream fin("scmax.in");
ofstream fout("scmax.out");
int v[NMAX],lg[NMAX],i,j,n,maxx,p;
int main()
{
    fin>>n;
    for(i=1;i<=n;++i)
        fin>>v[i];
    lg[n]=1;
    for(i=n-1;i>=1;i--)
    {
        maxx=0;
        for(j=i+1;j<=n;++j)
            if(v[i]<v[j]&&lg[j]>maxx) maxx=lg[j];
        lg[i]=maxx+1;
    }
    maxx=0;
    for(i=1;i<=n;++i)
        if(lg[i]>maxx)maxx=lg[i],p=i;
    fout<<maxx<<"\n";
    fout<<v[p]<<" ";
    for(i=p+1;i<=n;++i)
        if(v[i]>v[p]&&lg[i]==maxx-1)
    {
        fout<<v[i]<<" ";
        maxx--;
    }
    return 0;
}