2019年10月27日
D - Can you answer these queries? （线段树+剪枝）
摘要： A lot of battleships of evil are arranged in a line before the battle. Our commander decides to use our secret weapon to eliminate the battleships. Ea 阅读全文
posted @ 2019-10-27 22:50 __MEET 阅读(183) 评论(0) 推荐(0) 编辑