摘要：ZOJ Problem Set - 3946 Highway ProjectTime Limit: 2 Seconds Memory Limit: 65536 KB Edward, the emperor of the Marjar Empire, wants to build some bidir 阅读全文

摘要：Benny has a spacious farm land to irrigate. The farm land is a rectangle, and is divided into a lot of samll squares. Water pipes are placed in these 阅读全文