#include <fstream>
using namespace std;
ifstream cin("scmax.in");
ofstream cout("scmax.out");

int v[100001], n, i, l[100001], lmx, mx, k, t;

int main()
{
    cin>>n;
    for(i=1; i<=n; i++) cin>>v[i];
    l[n]=1;
    for(k=n-1; k>0; k--)
    {
        mx=0;
        for(i=k+1; i<=n; i++)
            if(v[i]>v[k] && l[i]>mx)
                mx=l[i];
        l[k]=mx+1;
        if(l[k]>lmx)
        {
            lmx=l[k];
            t=k;
        }
    }
    cout<<lmx<<'\n'<<v[t]<<" ";
    for(i=t+1; i<=n; i++)
        if (v[i]>=v[t] && l[i]==lmx-1)
        {
            cout<<v[i]<<" ";
            lmx--;
        }
    return 0;
}