On Sunday, Xiaohong's house had guests, and she helped her mother prepare for the reception. She is responsible for boiling water, washing teacups, and scrubbing the ground. The time required is as follows: boiling water takes 10 minutes, washing teacups takes 5 minutes, and scrubbing the ground takes 8 minutes. Does she need at least a few minutes to finish these things?
星期日，小红家来客人，她帮妈妈做迎客准备．她负责烧开水、洗茶杯、檫地，所需时间如下：烧开水10分，洗茶杯5分，檫地8分．她至少需要几分钟干完这些事？
<gadget id="calculator">8 - 10</gadget>
<output>-2</output>

<gadget id="calculator">10 + 5 + (-2)</gadget>
<output>13</output>

<result>13</result>