#include<fstream>
using namespace std;
ifstream fin("scmax.in");
ofstream fout("scmax.out");
int n;
long long v[100001];
int l[100001],poz[100001];

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

    int Max=1,p;
    l[n]=1; poz[n]=-1;
    for (i=n-1;i>0;i--)
        for (l[i]=1,poz[i]=-1,j=i+1;j<=n;j++)
            if (v[j]>v[i] && l[i]<1+l[j])
                {
                    l[i]=1+l[j]; poz[i]=j;

                  if(l[i]>Max) Max=l[i],p=i;
                }

    fout<<Max<<'\n';
    for(i=p;i!=-1;i=poz[i])
        fout<<v[i]<<' ';
    return 0;
}