1-n的序列,有两种操作: 1,将一段区间翻转 2,将一段区间切下来放到剩余序列的第C个数后 采用延迟更新的方法维护区间的翻转,并维护一个size域. 添加一个最大点和一个最小点,防止出界 翻转时,将第L-1个点伸展到跟,再将第R+1个点伸展到L-1的右子树,这时R+1的左子树就是要翻转的区间,加上一个标记. 切区间时,跟翻转操作差不多,只是不加标记.然后找到C+1和C,将C伸展到根,C+1伸展到C的右子树,此时C+1的左子树就是要插入的位置. 其实我说了这么多并没有什么卵用....最后还是得自…

题目大意 给一个数列,初始时为 1, 2, 3, ..., n,现在有两种共 m 个操作 操作1. CUT a b c 表示把数列中第 a 个到第 b 个从原数列中删除得到一个新数列,并将它添加到新数列中第 c 个数的后面 操作2. FLIP a b 表示把数列中第 a 个数到第 b 个数翻转 经过 m 个操作之后,输出这个数列 1≤n, m≤3*100000 做法分析 这题也不好用线段树做,用 Splay 很快就搞出来了 对于"操作1. CUT a b c" ,只需要将 a-1 旋转…

Play with Chain Time Limit: 6000/2000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 2783    Accepted Submission(s): 1141 Problem Description YaoYao is fond of playing his chains. He has a chain containing n diamond…

Play with Chain Time Limit: 6000/2000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) [Problem Description] YaoYao is fond of playing his chains. He has a chain containing n diamonds on it. Diamonds are numbered from 1 to n. At first, t…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=3487 YaoYao is fond of playing his chains. He has a chain containing n diamonds on it. Diamonds are numbered from 1 to n.At first, the diamonds on the chain is a sequence: 1, 2, 3, …, n.He will perform t…

Friends and Enemies Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 291    Accepted Submission(s): 160 Problem Description On an isolated island, lived some dwarves. A king (not a dwarf) ruled t…

最大的位或 Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Problem Description B君和G君聊天的时候想到了如下的问题.给定自然数l和r ,选取2个整数x,y满足l <= x <= y <= r ,使得x|y最大.其中|表示按位或,即C. C++. Java中的|运算.   Input 包含至多10001组测试数据.第一行有一个正整数,表示数据的组数.…

异或密码 Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Problem Description 晨晨在纸上写了一个长度为N的非负整数序列{ai}.对于这个序列的一个连续子序列{al,al+1,-,ar}晨晨可以求出其中所有数异或的结果 alxoral+1xor...xorar其 中xor表示位异或运算,对应C.C++. Java等语言中的^运算.小璐提出了M个询问,每个询问用…

Relative atomic mass Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 66    Accepted Submission(s): 59 Problem Description Relative atomic mass is a dimensionless physical quantity, the ratio of…

Basic Data Structure Time Limit: 7000/3500 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 872    Accepted Submission(s): 236 Problem Description Mr. Frog learned a basic data structure recently, which is called stac…