摘要: "线段树+单调栈+前缀和 2019icpc南昌网络赛I" Alice has a magic array. She suggests that the value of a interval is equal to the sum of the values in the interval, mul 阅读全文
posted @ 2019-04-27 22:21 谁知道你啊啊啊 阅读(244) 评论(0) 推荐(0)