#include <fstream>

using namespace std;
ifstream f("scmax.in");
ofstream g("scmax.out");
int a[100100],m,n,j,i,maxi,b[100100],p,v[100100];
int main()
{
    f>>n;
    for(i=1;i<=n;i++)f>>v[i];
    a[n]=1;
    m=0;
    for(i=n-1;i>=1;i--)
        {maxi=0;
          for(j=i+1;j<=n;j++)
            if(v[i]<v[j]&&a[j]>maxi)
            {
                maxi=a[j];
                b[j]=j;}
                a[i]=maxi+1;
            if(a[i]>m){m=a[i];p=i;}

        }
        g<<m<<'\n';
        g<<v[p]<<" ";
        m--;
        for(i=p+1;i<=n;i++)
            if (v[i]>v[p] && a[i]==m)
        {
            g<<v[i]<<" ";
            p=i; m--;
        }
    return 0;
}