摘要： The Water BowlsTime Limit:1000MSMemory Limit:65536KTotal Submissions:3071Accepted:1173DescriptionThe cows have a line of 20 water bowls from which they drink. The bowls can be either right-side-up (properly oriented to serve refreshing cool water) or upside-down (a position which holds no water). Th 阅读全文