摘要: 才4题(E题不知道错哪了),不过涨了500+Rating 灰名->褐名 A - Counting sbt B - Can you buy them all? sbt C - Not Equal 排个序然后sbt D - Collision 很显然就是问两点之间距离的奇偶性,打了个树剖求lca就过了 阅读全文
posted @ 2021-07-11 19:37 Push_Y 阅读(62) 评论(0) 推荐(0) 编辑