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



class SLLNode {
    protected int id;
    protected int plata;
    protected SLLNode succ;

    public SLLNode(int id,int plata, SLLNode succ) {
        this.id = id;
        this.plata=plata;
        this.succ = succ;
    }


}

class SLL {
    private SLLNode first;

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

    public void deleteList() {
        first = null;
    }

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

    }


    public void insertFirst(int id, int plata) {
        SLLNode ins = new SLLNode(id,plata, first);
        first = ins;
    }

    public void insertLast(int id,int plata) {
        if (first != null) {
            SLLNode tmp = first;
            while (tmp.succ != null)
                tmp = tmp.succ;
            SLLNode ins = new SLLNode(id, plata, null);
            tmp.succ = ins;
        } else {
            insertFirst(id,plata);
        }
    }

    public SLLNode getFirst() {
        return first;
    }
   /* public E  deleteFirst() {
        if (first != null) {
            SLLNode tmp = first;
            first = first.succ;
            return tmp.element;
        } else {
            System.out.println("Listata e prazna");
            return null;
        }
    }


    public E delete(SLLNode node) {
        if (first != null) {
            SLLNode tmp = first;
            if(first ==node){
                return this.deleteFirst();
            }
            while (tmp.succ != node&&tmp.succ.succ != null)
                tmp = tmp.succ;
            if (tmp.succ == node) {
                tmp.succ = tmp.succ.succ;
                return node.element;
            } else {
                System.out.println("Elementot ne postoi vo listata");
                return null;
            }
        } else {
            System.out.println("Listata e prazna");
            return null;
        }

    }*/



    public SLL brisi_pomali_od(int iznos) {
        SLLNode jazol1=this.getFirst();
        SLL rezultat=new SLL();
         while(jazol1!=null)
        {
            if(jazol1.plata>=iznos)
            {

                rezultat.insertLast(jazol1.id,jazol1.plata);
                jazol1=jazol1.succ;

            }
             else {

                 jazol1=jazol1.succ;
             }

        }
        return rezultat;
    }

    public SLL sortiraj_opagacki() {
        SLL list=new SLL();
        SLLNode jazol1=this.getFirst();
        SLLNode jazol2=null;
        SLLNode pom=this.getFirst();
        int tmp;
        int tmp1;
        while(jazol1!=null)
        {
            if(jazol1.succ!=null)
            {
                jazol2=jazol1.succ;

            }
            else break;
            while(jazol2!=null)
            {

                if(jazol1.id<jazol2.id)
                {
                    tmp=jazol1.id;
                    tmp1=jazol1.plata;
                    //pom.id=jazol1.id;
                    //pom.plata=jazol1.plata;
                    jazol1.id=jazol2.id;
                    jazol1.plata=jazol2.plata;
                    jazol2.id=tmp;
                    jazol2.plata=tmp1;
                    jazol2=jazol2.succ;

                }
                else
                {
                    jazol2=jazol2.succ;

                }
            }
            jazol1=jazol1.succ;

        }
        return this;
    }
    public void pecati (SLL lista)
    {
        SLLNode p=lista.first;
        while(p!=null)
        {
            System.out.println(p.id+" "+p.plata);
            p=p.succ;
        }
    }
    public void nema()
    {
        System.out.println("nema");
    }

}
public class SLLKompanija {
    public static void main(String[] args) throws IOException {

        SLL lista1 = new SLL();
        BufferedReader stdin = new BufferedReader(new InputStreamReader(
                System.in));
        String s = stdin.readLine();
        int N = Integer.parseInt(s);

        for (int i = 0; i < N; i++) {
            s=stdin.readLine();
            String s1=stdin.readLine();
            lista1.insertLast(Integer.parseInt(s),Integer.parseInt(s1));
        }
        s = stdin.readLine();

        lista1=lista1.brisi_pomali_od(Integer.parseInt(s));
        if(lista1!=null)
        {
            lista1=lista1.sortiraj_opagacki();
            lista1.pecati(lista1);

        }




    }
}