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

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

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