trash

#include<iostream>
using namespace std;
class IntNode {
private:
    int16_t elem;
    IntNode* last;
    IntNode* next;
    friend class  IntLinkedList;

};
class IntLinkedList {
private:
    IntNode* head;
    IntNode* tail;
public:
    IntLinkedList();
    bool empty() const;
    void addFront(int e);
    void removeFront();
    void print() const;
};
IntLinkedList::IntLinkedList() {
    head = new IntNode;
    tail = new IntNode;
    head->next = tail;
    tail->last = head;
}
bool IntLinkedList::empty() const {
    if (head->next == tail)
        return true;
    else
        return false;
}
void IntLinkedList::addFront(int e) {
    IntNode* u=new IntNode;
    IntNode* v = head ->next;
    u->elem = e;
    u->next = v;
    u->last = v->last;
    //v->last = head->last;
    v->last->next = u;
    v->last = u;
}
void IntLinkedList::removeFront() {
    IntNode* v = head->next;
    IntNode* u = v->last;
    IntNode* w = v->next;
    u->next = w;
    w->last = u;
    delete v;
}
void IntLinkedList::print() const {
    IntNode* temp = head->next;
    while (temp != tail) {
        cout << temp->elem << '\n';
        temp = temp->next;

    }
}
int main(){
    IntLinkedList myList;
    for (int i = 0;
        i < 10;
        ++i) {
        myList.addFront(i);

    }
    for (int i = 0;
        i < 3;
        ++i) {
        myList.removeFront();

    }
    myList.print();
    /*for (const auto& s : myList) {
        cout << s;
    }*/
    return 0;

}