A deck of poker has 4 suits, 13 cards of each suit, and 2 trump cards. At least how many cards must be drawn to ensure that 3 cards of the same suit.
一副扑克牌，有4张花色，每种花色13张，还有两张王牌，至少抽取多少张才能保证有3张牌花色相同．
<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<gadget id="calculator">8 + 2</gadget>
<output>10</output>

<gadget id="calculator">10 + 1</gadget>
<output>11</output>

<result>11</result>