From a deck of poker cards, the king and the king are drawn, and at least how many cards are drawn from the remaining cards to ensure that 3 cards are of the same suit.
从一副扑克牌中抽去大小王，剩余牌中至少抽取多少张，就能保证3张花色相同．
<gadget id="calculator">4 * 2</gadget>
<output>8</output>

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

<result>9</result>