#include <iostream>
#include <fstream>

using namespace std;

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

long best[100003],a[100003], maxx,sol=0,poz[100003],p,n;

void citire()
{
    f>>n;
    for (int i=1; i<=n; i++) f >> a[i];
}

int main()
{
    citire();
    int i,j;
    best[n]=1;
    poz[n]=-1;
    maxx=1;
    p=n;
    for(i=n-1; i>=1; --i)
    {
        best[i]=1;
        poz[i]=-1;
        for(j=i+1; j<=n; ++j)
            if(a[j]>a[i] && best[i]<best[j]+1)
            {
                best[i]=best[j]+1;
                poz[i]=j;
                if(best[i]>maxx) maxx=best[i],p=i;
            }
    }
    i=p;
    g << maxx << "\n";
    while(i!=-1)
    {
        g << a[i] << " ";
        i=poz[i];
    }

    return 0;
}