#include <iostream>
#include <fstream>
using namespace std;
ifstream f("scmax.in");
ofstream g("scmax.out");
long long  j,a[100000],n,i,mx,maxim,l[100000],t;
int main()
{
    f>>n;
    for (i=1;i<=n;i++)
        f>>a[i];
    l[n]=1;
    for (i=n-1;i>=1;i--)
    {
        mx=0;
        for (j=i+1;j<=n;j++)
            if (a[j]>a[i]&&l[j]>mx)
            mx=l[j];
        l[i]=mx+1;
        if (l[i]>maxim)
        {
            maxim=l[i];
            t=i;
        }
    }
    g<<maxim<<'\n';
    g<<a[t]<<" ";
    for (i=t+1;i<=n;i++)
        if (a[i]>a[t]&&l[i]==maxim-1)
    {
        g<<a[i]<<" ";
        maxim--;
    }
}