A piece of fabric can be used to make 50 coats or 80 trousers. A jacket and a pair of trousers are a set, and at least a few pieces of such fabric can be made into an integer set without wasting fabric.
一段布料，可做上衣50件，或裤子80条．一件上衣和一条裤子为一套，至少几段这样的布料刚好做成整数套而不浪费布料．
<result>13</result>