#include<fstream>
#include<iostream>
using namespace std;
    long n,a[100003],b[100003],m,s=0,po[100003],p,i,j;
int main()
{
    ifstream f("scmax.in");
    ofstream g("scmax.out");
    f>>n;
    for(i=1;i<=n;i++)
        f>>a[i];
    b[n]=1;
    po[n]=-1;
    m=1;
    p=n;
    for(i=n-1;i>=1;i--)
    {
        b[i]=1;
        po[i]=-1;
        for(j=i+1;j<=n;++j)
            if(a[i]<a[j]&&b[i]<b[j]+1)
        {
            b[i]=b[j]+1;
            po[i]=j;
            if(b[i]>m)
            {
                m=b[i];
                p=i;
            }
        }
    }
    g<<m<<"\n";
    i=p;
    while(i!=-1)
    {
        g<<a[i]<<" ";
        i=po[i];
    }
    f.close();
    g.close();
    return 0;
}