Flip Game Time Limit: 15000/5000 MS (Java/Others)    Memory Limit: 65535/32768 K (Java/Others)Total Submission(s): 1800    Accepted Submission(s): 589 Problem Description Flip game is played on a square N*N field with two-sided pieces placed on each…

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…

HDU   5694 Problem Description 众所周知,度度熊喜欢的字符只有两个:B和D.今天,它发明了一种用B和D组成字符串的规则:S(1)=BS(2)=BBDS(3)=BBDBBDD…S(n)=S(n−1)+B+reverse(flip(S(n−1))其中,reverse(s)指将字符串翻转,比如reverse(BBD)=DBB,flip(s)指将字符串中的B替换为D,D替换为B,比如flip(BBD)=DDB.虽然度度熊平常只用它的电脑玩连连看,这丝毫不妨碍这台机器无与伦比…

http://acm.hdu.edu.cn/showproblem.php?pid=1890 Robotic Sort Problem Description Somewhere deep in the Czech Technical University buildings, there are laboratories for examining mechanical and electrical properties of various materials. In one of yest…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=4064 Problem Description Carcassonne is a tile-based board game for two to five players.Square tiles are printed by city segments,road segments and field segments. The rule of the game is to put the tile…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=4897 Problem Description There is an old country and the king fell in love with a devil. The devil always asks the king to do some crazy things. Although the king used to be wise and beloved by his peopl…

http://acm.hdu.edu.cn/showproblem.php?pid=3487 题意:有两种操作:1.Flip l r ,把 l 到 r 这段区间 reverse.2.Cut a b c ,把 a 到 b 这段区间切掉,再把这段区间接到切掉后的第 c 个数的后面. 思路:做完了上一道变态题目,做这道题目如鱼得水.Cut的时候就是把a 到 b 放到keytree的位置,记录一下当前keytree的值,然后切掉,再把切掉后的第 c 个数转到 root 的位置,再把这个记录的值重新连接回…

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…

Turn the pokers Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 1265    Accepted Submission(s): 465 Problem Description During summer vacation,Alice stay at home for a long time, with nothing t…

HDU 3397 Sequence operation 题目链接 题意:给定一个01序列,有5种操作 0 a b [a.b]区间置为0 1 a b [a,b]区间置为1 2 a b [a,b]区间0变成1,1变成0 3 a b 查询[a,b]区间1的个数 4 a b 查询[a,b]区间连续1最长的长度 思路:线段树线段合并.须要两个延迟标记一个置为01,一个翻转,然后因为4操作,须要记录左边最长0.1.右边最长0.1,区间最长0.1,然后区间合并去搞就可以 代码: #include <cstdi…