2019年5月11日
CodeForces - 922D Robot Vacuum Cleaner （贪心）
摘要： Pushok the dog has been chasing Imp for a few hours already. Fortunately, Imp knows that Pushok is afraid of a robot vacuum cleaner. While moving, the 阅读全文
posted @ 2019-05-11 11:30 断腿三郎 阅读(391) 评论(0) 推荐(0) 编辑