#include <fstream>

using namespace std;

ifstream in("scmax.in");
ofstream out("scmax.out");
int a[100], l[100], c[100];
int main()
{
    int n;
    in>>n;
    for(int i=1;i<=n;i++)
    {
        in>>a[i];
        l[i]=1;
        c[i]=-1;
    }
    int maxim=0, mm=0;
    for(int i=n;i>=1;i--)
        for(int j=n;j>i;j--)
            if(a[i]<a[j]&&l[j]+1>l[i])
             {
                 l[i]=l[j]+1, c[i]=j;
                 if(l[i]>=maxim) {maxim=l[i];mm=i;}
             }

           out<<maxim<<endl;
           int pas=0;
    while(pas<maxim)
    {
        out<<a[mm]<<" ";
        mm=c[mm];
        pas++;
            }
    return 0;
}