#include <fstream>
#define nmax 100000
using namespace std;

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

int v[nmax],l[nmax],n,i,maxim,k,t;

int main()
{
    f>>n;
    for(i=1;i<=n;i++)
    f>>v[i];

    l[n]=1;
    for(k=n-1;k>=1;k--)
    {
        maxim=0;
        for(i=k+1;i<=n;i++)
        if(v[i]>v[k] && l[i]>maxim)
        maxim=l[i];
        l[k]=1+maxim;
    }

    maxim=l[1];
    t=1;
    for(k=1;k<=n;k++)
    if(l[k]>maxim)
    {
        maxim=l[k];
        t=k;
    }
    g<<maxim<<"\n"<<v[t]<<' ';
    for(i=t+1;i<=n;i++)
    if(v[i]>v[t] && l[i]==maxim-1)
    {
        g<<v[i]<<' ';
        maxim--;
    }
    return 0;
}