Little Naughty helps his mother with housework. It takes 5 minutes to sweep the floor, 8 minutes to wipe the furniture, 15 minutes to boil water, and 1 minute to make tea.
小淘气帮妈妈做家务，扫地要用5分钟，擦家具要8分钟，烧开水要15分钟，泡茶要1分钟，如果他合理安排，做完这些事至少要多少分钟．
<gadget id="calculator">15 + 1</gadget>
<output>16</output>

<result>16</result>