#include <iostream>
#include <fstream>
using namespace std;

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

int n,maxim,ind;
int a[100001],b[100001];

int main()
{
    in>>n;
    for(int i=1;i<=n;++i)
        in>>a[i];
    b[n]=1;
    for(int i=n-1;i>=1;--i)
        for(int j=i;j<=n;++j)
            if(a[j]>a[i] && b[j]>b[i])
            {
                b[i]=1+b[j];
                maxim=max(maxim,b[i]);
                ind=i;
            }
    out << maxim << "\n" << a[ind] << " ";
    maxim--;
    for(int i=ind+1;i<=n && maxim>=1;++i)
    {
        if(maxim==b[i] && a[ind]<a[i])
        {
            out << a[i] << " ";
            ind=i;
            maxim--;
        }
    }
    return 0;
}