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


def push(top, d):
    return Node(d, top)


def print_stack(top):
    cur = top
    while cur:
        print(cur.data, end=" ")
        cur = cur.next
    print()


top = None

while True:
    try:
        print("\n1 - создать стек")
        print("2 - добавить элемент")
        print("3 - показать стек")
        print("0 - выход")
        c = input(">> ")

        if c == "1":
            top = None
            arr = list(map(int, input("Введите числа: ").split()))
            for x in arr:
                top = push(top, x)
        elif c == "2":
            d = int(input("Введите D: "))
            top = push(top, d)
            print("Новая вершина:", top.data if top else None)
        elif c == "3":
            print_stack(top)
        elif c == "0":
            break
    except:
        print("Ошибка ввода")