Revenge of Segment Tree                                                          Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)                                                                                    To…

Revenge of Segment Tree Problem DescriptionIn computer science, a segment tree is a tree data structure for storing intervals, or segments. It allows querying which of the stored segments contain a given point. It is, in principle, a static structure…

Revenge of Segment Tree Problem Description In computer science, a segment tree is a tree data structure for storing intervals, or segments. It allows querying which of the stored segments contain a given point. It is, in principle, a static structur…

http://acm.hdu.edu.cn/showproblem.php?pid=5086 题目大意: 给定一个序列,求这个序列的子序列的和,再求所有子序列总和,这些子序列是连续的.去题目给的第二组数据的 3 1 2 3 这个序列的子序列有 [1].[2].[3].[1.2].[2.3].[1.2.3],这些子序列的和是分别是1.2.3.3.5.6.再将这些和加起来 1+2+3+3+5+6=20这个就是最终的答案. 解题思路: 我们假设n等于5.序列为1.2.3.4.5.然后我们将它们如下排列…

Revenge of LIS II Problem DescriptionIn computer science, the longest increasing subsequence problem is to find a subsequence of a given sequence in which the subsequence's elements are in sorted order, lowest to highest, and in which the subsequence…

Revenge of Segment Tree Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 383    Accepted Submission(s): 163 Problem Description In computer science, a segment tree is a tree data structure for s…

BestCoder Round #16 题目链接 这场挫掉了,3挂2,都是非常sb的错误 23333 QAQ A:每一个数字.左边个数乘上右边个数,就是能够组成的区间个数,然后乘的过程注意取模不然会爆掉 B:dp,dp[i][2]记录下第一长的LIS,和第二长的LIS.哎,转移的时候一个地方写挫掉了导致悲剧啊QAQ C:首先假设知道Nim游戏的,就非常easy转化问题为.一些数字能否选几个能否异或和为0.那么就是每一个数字拆成40位.然后每一位异或和为0.这样就能够构造出40个方程,然后高斯消元…

传送门 DZY Loves Topological Sorting Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 221    Accepted Submission(s): 52 Problem Description A topological sort or topological ordering of a directed…

题目链接:pid=5228">ZCC loves straight flush pid=5228">题面: pid=5228"> ZCC loves straight flush Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/65536 K (Java/Others) Total Submission(s): 827    Accepted Submission(s): 340…

http://acm.hdu.edu.cn/showproblem.php?pid=5423 题目大意:给你一个树 判断这棵树是否是独特的 一颗树是独特的条件:不存在一颗和它本身不同但相似的树 两颗树相似条件:两颗树中点的数量相等且相对应的点的深度相同 如第2个样例 4 1 2 2 3 1 4 与 4 1 2 1 4 3 4 如图:这两棵树的点的数量相等且相应的点的深度deep相同,所以这两棵树相似,所以样例2存在一颗树与它不同但相似,即不特殊 运用广搜统计每个点的深度 要想一颗树特殊,只有保证…