#include <iostream>
#include <fstream>
using namespace std;
ifstream f("scmax.in");
ofstream g("scmax.out");
int lg[100004],n,lmax,pmax=-1,i,j,poz[100004];
long long v[100004];
int main()
{
    f>>n;
    for(i=1; i<=n; i++)
        f>>v[i];
    poz[n]=-1;
    lg[n]=1;
    for(i=n-1;i;i--)
    {
        lg[i]=1;
        poz[i]=-1;
        for(j=i+1; j<=n; j++)
        {
            if(v[i]<v[j] && lg[i]<lg[j]+1)
            {
                lg[i]=lg[j]+1;
                poz[i]=j;
            }
        }
        if(lg[i]>lmax)
        {
            lmax=lg[i];
            pmax=i;
        }
    }
    g<<lmax<<'\n';
    while(pmax!=-1)
    {

        g<<v[pmax]<<" ";
        pmax=poz[pmax];

    }
    return 0;
}