package sandra_sama_resavaj2;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Sandra_sama_resavaj2 {

public static class DLLNode<E> {
	protected E element;
	protected DLLNode<E> pred, succ;

	public DLLNode(E elem, DLLNode<E> pred, DLLNode<E> succ) {
		this.element = elem;
		this.pred = pred;
		this.succ = succ;
	}

	@Override
	public String toString() {
		return element.toString();
	}
}

public static class DLL<E> {
	private DLLNode<E> first, last;

	public DLL() {
		// Construct an empty SLL
		this.first = null;
		this.last = null;
	}

	public void deleteList() {
		first = null;
		last = null;
	}

	public int length() {
		int ret;
		if (first != null) {
			DLLNode<E> tmp = first;
			ret = 1;
			while (tmp.succ != null) {
				tmp = tmp.succ;
				ret++;
			}
			return ret;
		} else
			return 0;

	}

	public DLLNode<E> find(E o) {
		if (first != null) {
			DLLNode<E> tmp = first;
			while (tmp.element != o && tmp.succ != null)
				tmp = tmp.succ;
			if (tmp.element == o) {
				return tmp;
			} else {
				System.out.println("Elementot ne postoi vo listata");
			}
		} else {
			System.out.println("Listata e prazna");
		}
		return first;
	}

	public void insertFirst(E o) {
		DLLNode<E> ins = new DLLNode<E>(o, null, first);
		if (first == null)
			last = ins;
		else
			first.pred = ins;
		first = ins;
	}

	public void insertLast(E o) {
		if (first == null)
			insertFirst(o);
		else {
			DLLNode<E> ins = new DLLNode<E>(o, last, null);
			last.succ = ins;
			last = ins;
		}
	}

	public void insertAfter(E o, DLLNode<E> after) {
		if(after==last){
			insertLast(o);
			return;
		}
		DLLNode<E> ins = new DLLNode<E>(o, after, after.succ);
		after.succ.pred = ins;
		after.succ = ins;
	}

	public void insertBefore(E o, DLLNode<E> before) {
		if(before == first){
			insertFirst(o);
			return;
		}
		DLLNode<E> ins = new DLLNode<E>(o, before.pred, before);
		before.pred.succ = ins;
		before.pred = ins;
	}

	public E deleteFirst() {
		if (first != null) {
			DLLNode<E> tmp = first;
			first = first.succ;
			if (first != null) first.pred = null;
			if (first == null)
				last = null;
			return tmp.element;
		} else
			return null;
	}

	public E deleteLast() {
		if (first != null) {
			if (first.succ == null)
				return deleteFirst();
			else {
				DLLNode<E> tmp = last;
				last = last.pred;
				last.succ = null;
				return tmp.element;
			}
		}
		// else throw Exception
		return null;
	}

	public E delete(DLLNode<E> node) {
		if(node==first){
			deleteFirst();
			return node.element;
		}
		if(node==last){
			deleteLast();
			return node.element;
		}
		node.pred.succ = node.succ;
		node.succ.pred = node.pred;
		return node.element;

	}

	@Override
	public String toString() {
		String ret = new String();
		if (first != null) {
			DLLNode<E> tmp = first;
			ret += tmp + "<->";
			while (tmp.succ != null) {
				tmp = tmp.succ;
				ret += tmp + "<->";
			}
		} else
			ret = "Prazna lista!!!";
		return ret;
	}

	public String toStringR() {
		String ret = new String();
		if (last != null) {
			DLLNode<E> tmp = last;
			ret += tmp + "<->";
			while (tmp.pred != null) {
				tmp = tmp.pred;
				ret += tmp + "<->";
			}
		} else
			ret = "Prazna lista!!!";
		return ret;
	}

	public DLLNode<E> getFirst() {
		return first;
	}

	public DLLNode<E> getLast() {

		return last;
	}

	public void izvadiDupliIPrebroj(){

	}
}

    public static void pecati(DLL<Integer> lista) {
        DLLNode<Integer> tmp = lista.getFirst();
        while (tmp != null) {
            System.out.print(tmp.element);
            System.out.print(" ");
            tmp = tmp.succ;
        }
    }




    public static void PodeliListaProsek(DLL<Integer> lista){
        DLLNode<Integer> jazol1 = lista.getFirst();
        DLL<Integer> lista1 = new DLL<Integer>(), lista2 = new DLL<Integer>();
        int prosek=0, suma=0, brojac=0;

        while(jazol1!=null){
            if(jazol1.succ!=null){
                suma+=jazol1.element;
                brojac++;
                jazol1 = jazol1.succ;
            }
            else{
                suma+=jazol1.element;
                brojac++;
                break;
            }
        }
        prosek = suma/brojac;

        jazol1 = lista.getLast();

        while(jazol1!=null){
            if(jazol1.element <= prosek){
                lista1.insertLast(jazol1.element);
                jazol1 = jazol1.pred;
            }
            else if(jazol1.element > prosek){
                lista2.insertLast(jazol1.element);
                jazol1 = jazol1.pred;
            }
        }

        pecati(lista1);
        System.out.println("\n");
        pecati(lista2);

    }

    public static void main(String[] args) throws IOException {
        DLL<Integer> lista = new DLL<Integer>();
        BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
        String s = stdin.readLine();
        int N = Integer.parseInt(s);

        s = stdin.readLine();
        String[] pomniza = s.split(" ");

        for (int i = 0; i < N; i++) {
            lista.insertLast(Integer.parseInt(pomniza[i]));
        }

        PodeliListaProsek(lista);
    }
}