#include <iostream>
#include <bits/stdc++.h>

using namespace std;
long a[100001];int sol[100001],b1[100001];int n;
ifstream f("scmax.in");
ofstream g("scmax.out");
void citire()
{
    f>>n;
    for (int i=1; i<=n; ++i) {f>>a[i]; sol[i]=1;};
    f.close();
}

void afisare()
{

int poz,maxim=sol[1];
    for (int i=1; i<=n; ++i)
        if (sol[i]>maxim) { maxim=sol[i]; poz=i;};
g<<maxim<<'\n';
    int j=0;
    for (int i=n; i>=1; i--)
    if (sol[i]==maxim) {j++; b1[j]=a[i]; maxim--;};
    for (int i=j; i>=1; i--)
g<<b1[i]<<" ";
    g.close();
}
bool b;
int main()
{
    citire();
    for (int i=2; i<=n; ++i)
    {


     for (int j=1; j<i; ++j)
        {
            b=((sol[j]==sol[i])&& (a[i]>a[j]));
            if (b) sol[i]=sol[i]+1;
        }

    }
afisare();
return 0;
}