#include<iostream>
using namespace std;

typedef struct element {
                        int info;
                        struct element *next;
                        struct element *prev;
                       } termen;
class  doublelist {
                   private :
                   int length;
                   termen *start,*current,*finalist;
                   int isempty()
                   {
                       return (length==0);
                   }
                   public :
                   doublelist() { length=0; }
                   int showlenght() {int value=length;cout<<endl<<value;}
                   int addLIFO(int value) {
                                            
                                            if (isempty())  {
                                                    element *new_one=new element;
                                                    if (new_one!=NULL)
                                                        {
                                                            new_one->info=value;
                                                            new_one->next=NULL;
                                                            new_one->prev=NULL;
                                                            length=1;
                                                            start=current=finalist=new_one;
                                                        }
                                                    return 0;
                                                                }
                                            element *new_one=new element;
                                            if (new_one!=NULL) {
                                                new_one->info=value;
                                                new_one->next=NULL;
                                                new_one->prev=finalist;
                                                length++;
                                                finalist->next=new_one;
                                                finalist=new_one;
                                                                }
                                                return 1;
                                             }
                   int delLIFO(int *oldtop);
                   int printLIST(int direction)
                                            {
                                             
                                            if(direction)
                                            {
                                            cout<<endl;
                                            if (!isempty())
                                                {
                                            element *carrier;
                                            carrier=start;
                                            while (carrier!=NULL) {
                                             cout<<carrier->info<<" ";
                                             carrier=carrier->next;
                                            }

                                            return 1;}
                                            return 0;
                                            }
                                            else
                                            {
                                            cout<<endl;
                                            if (!isempty())
                                                {
                                            element *carrier;
                                            carrier=finalist;
                                            while (carrier!=NULL) {
                                             cout<<carrier->info<<" ";
                                             carrier=carrier->prev;
                                            }

                                            return 1;}
                                            return 0;
                                            }
                                            }
                   protected :
                  } somelist;



int main()
{
for(int i=1;i<=10;i++) somelist.addLIFO(i);
somelist.printLIST(1); 
somelist.printLIST(0); 
}