In class 302, there are 25 people who like to draw, 19 people who like to play chess, 5 people who like both, and none who don't like both. How many students are there in class 302?
302班有25人喜欢画画，有19人喜欢下棋，两样都喜欢的有5人，两样都不喜欢的一个也没有，302班有学生多少人．
<gadget id="calculator">19 - 5</gadget>
<output>14</output>

<gadget id="calculator">25 + 14</gadget>
<output>39</output>

<result>39</result>