2013年7月23日
POJ 1873 The Fortified Forest（枚举+凸包）
摘要： DescriptionOnce upon a time, in a faraway land, there lived a king. This king owned a small collection of rare and valuable trees, which had been gathered by his ancestors on their travels. To protect his trees from thieves, the king ordered that a high fence be built around them. His wizard was put 阅读全文
posted @ 2013-07-23 12:55 Oyking 阅读(330) 评论(0) 推荐(0)