There are 54 cards in a deck of poker. The King and King are regarded as 0 points, A is regarded as 1 point, J is regarded as 11 points, Q is regarded as 12 points, and K is regarded as 13 points. It is required that the sum of the points of 2 cards must be equal to 14 in the cards drawn each time, so at least how many cards should be taken.
一付扑克牌有54张，将大小王视为0点，A视为1点，J视为11点，Q视为12点，K视为13点，任意抽出若干张牌，不计花色，如果要求每次抽出的牌中必定有2张牌的点数之和等于14，那么至少要取多少张牌．
<gadget id="calculator">27 + 1</gadget>
<output>28</output>

<result>28</result>