#include<iostream>
#include<fstream>
using namespace std;
long a[100000],n , l[100000], poz[100000], i, j, pozmax;
int main()
{
    long max;
    ifstream f("scmax.in");
    f>>n;
    for(i=1;i<=n;i++)
    f>>a[i];
    f.close();
    max=-1;
    pozmax=1;
    l[n]=1;
    poz[n]=-1;
    for(i=n-1;i>=1;i--)
{
    l[i]=1;
    poz[i]=-1;
    for(j=i+1;j<+n;j++)
    if(a[i]<a[j]&&l[i]<1+l[j])
    {
                              l[i]=1+l[j];poz[i]=j;
                              if(l[i]>max)
                              {max=l[i];
                              pozmax=i;}
                              }
                              }
    ofstream g("scmax.out");
    g<<max<<endl;
    for(i=pozmax;i!=-1;i=poz[i])
    g<<a[i]<<" "<<endl;
    g.close();
    return 0;
}