#include <fstream>
using namespace std;
int n, a[100000],l[100000],urm[100000];
int main()
{
    int m=0;
    ifstream fin("scmax.in");
    ofstream fout("scmax.out");
    fin>>n;
    for(int i=0;i<n;++i)
        fin>>a[i];
    l[n]=1;
    urm[n]=-1;
    for(int i=n-2;i>=0;--i){
        l[i]=1;
        urm[i]=-1;
        for(int j=1+i;j<n;++j){
            if(l[j]+1>l[i]&&a[j]>a[i]){
                l[i]=l[j]+1;
                urm[i]=j;
            }
        }
        if(l[i]>l[m])
            m=i;
    }
    fout<<l[m]<<'\n';
    for(int i=m;i!=-1;i=urm[i])
        fout<<a[i]<< ' ';
    return 0;
}