As you put a row of cards on the table face down, say, turning one of the cards, how many cards were transferred in your absence from one end of the row to the other end of the row

Take the deck and give from its top a row of fifteen cards face down. The deck you are using is prepared in a special way, the first 10 cards are stacked according to the system: 10, 9, 8, 7, 6, 5, 4, 3, 2, ace. The suit does not matter. The eleventh card must be completely clean, that is, a spare card that is in any deck. If you do not have such a card, then replace it with a jack. In the following description of this focus, this map will correspond to zero. After all 15 cards are spread out, they will lie in this order: 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, *, *, *, *. Asterisks are any maps. Then you say that now leave the room, and at that moment the audience can take no more than ten cards from the right row and put them in the same order to the other end. After when you return, you will only need to open the eleventh card, counting from the left end. This way the card will tell you the number of cards transferred.