There are four bags of candies, and the sum of any three bags is more than 60, then the sum of the four bags of candies is at least how many pieces.
有四袋糖块，其中任意三袋的总和都超过60块，那么这四袋糖块的总和至少为多少块．
<gadget id="calculator">60 / 3</gadget>
<output>20</output>

<gadget id="calculator">20 + 20 + 21 + 21</gadget>
<output>82</output>

<result>82</result>