def create_node(name, phone):
    return {'name': name, 'phone': phone, 'next': None}

def ll_insert(head, name, phone):
    if head is None:
        return create_node(name, phone)

    current = head
    while True:
        if current['name'] == name:
            current['phone'] = phone
            return head
        
        if current['next'] is None:
            break
        current = current['next']

    current['next'] = create_node(name, phone)
    return head

def ll_find(head, name):
    current = head
    while current:
        if current['name'] == name:
            return current['phone']
        current = current['next']
    return None

def ll_delete(head, name):
    if head is None:
        return None

    if head['name'] == name:
        return head['next']

    current = head
    while current['next']:
        if current['next']['name'] == name:
            current['next'] = current['next']['next']
            return head
        current = current['next']

    return head

def ll_list_all(head):
    result = []
    current = head
    while current:
        result.append((current['name'], current['phone']))
        current = current['next']
    result.sort(key=lambda x: x[0])
    return result

if __name__ == "__main__":
    phonebook = None

    phonebook = ll_insert(phonebook, "Коля", "111-11-11")
    phonebook = ll_insert(phonebook, "Саша", "222-22-22")
    phonebook = ll_insert(phonebook, "Женя", "333-33-33")
    
    print("После вставки:", ll_list_all(phonebook))

    phonebook = ll_insert(phonebook, "Коля", "999-99-99")
    print("После обновления Коля:", ll_list_all(phonebook))

    print("Поиск Саша:", ll_find(phonebook, "Саша"))
    print("Поиск Zoro:", ll_find(phonebook, "Zoro"))

    phonebook = ll_delete(phonebook, "Саша")
    print("Удалили Саша:", ll_list_all(phonebook))

    phonebook = ll_delete(phonebook, "Коля")
    print("Удалили Коля:", ll_list_all(phonebook))