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P3806 【模板】点分治1 题目背景 感谢hzwer的点分治互测。 感谢hzwer的点分治互测。 题目描述 给定一棵有n个点的树 询问树上距离为k的点对是否存在。 给定一棵有n个点的树 询问树上距离为k的点对是否存在。 输入格式 n,m 接下来n-1条边a,b,c描述a到b有一条长度为c的路径 接 阅读全文
posted @ 2019-08-02 15:15
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Travel There are nn planets in the MOT galaxy, and each planet has a unique number from 1 \sim n1∼n. Each planet is connected to other planets through 阅读全文
posted @ 2019-08-01 17:02
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Swap There is a sequence of numbers of length nn, and each number in the sequence is different. There are two operations: Swap the first half and the 阅读全文
posted @ 2019-08-01 16:59
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Tree Ming and Hong are playing a simple game called nim game. They have nn piles of stones numbered 11 to nn ,the ii-th pile of stones has a_iai ston 阅读全文
posted @ 2019-08-01 16:56
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Angel's Journey “Miyane!” This day Hana asks Miyako for help again. Hana plays the part of angel on the stage show of the cultural festival, and she i 阅读全文
posted @ 2019-08-01 16:13
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Tasks It's too late now, but you still have too much work to do. There are nn tasks on your list. The ii-th task costs you t_itiseconds. You want to 阅读全文
posted @ 2019-08-01 16:08
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POJ 1741. Tree Time Limit: 1000MS Memory Limit: 30000K Total Submissions: 34141 Accepted: 11420 Description Give a tree with n vertices,each edge has 阅读全文
posted @ 2019-08-01 16:03
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好久没写过博客了，这学期不是很有热情去写博客，写过的题也懒得写题解。现在来水一水博客，写一下若干年前的题目的题解。 Atlantis Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Tot 阅读全文
posted @ 2019-06-05 22:26
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水博客，水一水。 Horizontally Visible Segments Time Limit: 5000MS Memory Limit: 65536K Total Submissions: 6290 Accepted: 2287 Description There is a number of 阅读全文
posted @ 2019-05-30 19:32
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P3380 【模板】二逼平衡树（树套树） 题目描述 您需要写一种数据结构（可参考题目标题），来维护一个有序数列，其中需要提供以下操作： 查询k在区间内的排名 查询区间内排名为k的值 修改某一位值上的数值 查询k在区间内的前驱(前驱定义为严格小于x，且最大的数，若不存在输出-2147483647) 查 阅读全文
posted @ 2019-05-17 20:36
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