In this issue of "Where Are We Going, Dad", all the cute babies have completed the task of washing clothes for babies. The cute babies hang 11 washed clothes on the rope. Now it is required that the two sides of each piece of clothes must be clamped with clips. The same clip clamps the two sides of two adjacent clothes. How many clips are needed in total?
本期的《爸爸去哪儿》，各位萌娃完成了为宝宝洗衣服的任务．萌娃们将洗好的11件衣服晾在绳子上，现要求每件衣服的两边必须用夹子夹住，同一个夹子夹住相邻的两件衣服的两边，一共要多少个夹子．
<gadget id="calculator">11 + 1</gadget>
<output>12</output>

<result>12</result>