A deck of poker has 54 cards. If the big and small kings are removed, at least how many poker cards are taken out from it, so as to ensure that two of the poker cards taken out must be of the same size.
一副扑克牌共54张，去掉大小王，至少从中取出多少张扑克，才能保证取出的扑克中必有两张的大小相同．
<gadget id="calculator">13 + 1</gadget>
<output>14</output>

<result>14</result>