There are 16 students in class 1 of the fourth grade participating in a parade performance. If these 16 students line up in 4 rows, with 4 people in each row, and the outermost circle of students wears yellow sportswear, and the rest of the students wear red sportswear, how many sets of yellow sportswear do you need to prepare? Clothes?
四年级1班有16名同学参加队列表演，如果这16名同学排成4行，每行4人，最外圈同学穿黄色运动服，其余同学穿红色运动服，那么需准备多少套黄色运动服？
<gadget id="calculator">4 + 4 + 2 + 2</gadget>
<output>12</output>

<result>12</result>