In a deck of playing cards (the big and small kings have been drawn), at least how many cards must be taken out to ensure that there are at least 3 cards of a certain suit.
在一副扑克牌中(大小王已被抽出)，至少拿出多少张，才能保证某一种花色的牌至少有3张．
<gadget id="calculator">2 * 4</gadget>
<output>8</output>

<gadget id="calculator">8 + 1</gadget>
<output>9</output>

<result>9</result>