2019年6月1日
G - KiKi's K-Number(树状数组求区间第k大）
摘要： For the k-th number, we all should be very familiar with it. Of course,to kiki it is also simple. Now Kiki meets a very similar problem, kiki wants to 阅读全文
posted @ 2019-06-01 21:43 cherish__lin 阅读(365) 评论(0) 推荐(0)
E - Apple Tree(树状数组+DFS序）
摘要： There is an apple tree outside of kaka's house. Every autumn, a lot of apples will grow in the tree. Kaka likes apple very much, so he has been carefu 阅读全文
posted @ 2019-06-01 20:39 cherish__lin 阅读(299) 评论(0) 推荐(0)