#include <fstream>
#include <cstring>
#include <iostream>
using namespace std;
ifstream in ("scmax.in");
ofstream out ("scmax.out");
int n,a[100005],sol[100005];
int sclm(int s[],int a[],int n)
{
    int m[1005],u[1005],mx=0,poz;
    m[n]=1;
    u[n]=0;
    memset(u,0,sizeof(u));
    for(int i=n-1; i; i--)
    {
        m[i]=1;
        for(int j=i+1; j<=n; j++)
            if(a[i]<a[j]&&m[j]>=m[i])
            {
                m[i]=m[j]+1,u[i]=j;
                if(m[i]>=mx)
                    mx=m[i],poz=i;
            }
    }
    for(int i=1; i<=mx; i++)
        s[i]=a[poz],poz=u[poz];
    return mx;
}
int main()
{
    in>>n;
    for(int i=1; i<=n; i++)
        in>>a[i];
    int nr=sclm(sol,a,n);
    out<<nr<<'\n';
    for(int i=1; i<=nr; i++)
        out<<sol[i]<<' ';
}