# task: ListWork62 / Создание убывающего списка из файла

import random


class Node:
    def __init__(self, data):
        self.data = data
        self.next = None


def insert_desc(head, x):
    node = Node(x)
    if not head or x > head.data:
        node.next = head
        return node
    cur = head
    while cur.next and cur.next.data > x:
        cur = cur.next
    node.next = cur.next
    cur.next = node
    return head


def print_list(h):
    while h:
        print(h.data, end=" ")
        h = h.next
    print()


while True:
    try:
        print("\n1 - создать файл")
        print("2 - обработать файл")
        print("0 - выход")
        c = input(">> ")

        if c == "1":
            n = int(input("N: "))
            arr = [random.randint(1, 100) for _ in range(n)]
            with open("data.txt", "w") as f:
                f.write(str(n) + "\n")
                f.write(" ".join(map(str, arr)))
        elif c == "2":
            with open("data.txt") as f:
                n = int(f.readline())
                arr = list(map(int, f.readline().split()))
            head = None
            for x in arr:
                head = insert_desc(head, x)
            print_list(head)
        elif c == "0":
            break
    except:
        print("Ошибка")