标题效果: 鉴于DNA有一个正确的顺序值.请构造一个长度I的DNA在这个序列使DNA正确的顺序值极大.它被认为是负的输出噼啪. .. IDEAS: 施工顺序是,ac己主动机上走,求最大要用到dp dp[i][j][k] 表示如今构造到了长度 i . 此时的我们把当前字符放在j节点.而且满足了k状态.k是一个10位的2进制状态压缩. 注意这道题上有坑就是一个序列可能有多个权值. 所以不能直接赋值.须要用位或. #include <cstdio> #include <iostream>…

Rescue the Rabbit Time Limit: 20000/10000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 1412 Accepted Submission(s): 403 Problem Description Dr. X is a biologist, who likes rabbits very much and can do everything for…

Description Little jay really hates to deal with string. But moondy likes it very much, and she's so mischievous that she often gives jay some dull problems related to string. And one day, moondy gave jay another problem, poor jay finally broke out a…

题目链接:BCD Code 解析:n个病毒串.问给定区间上有多少个转换成BCD码后不包括病毒串的数. 很奇妙的题目. . 经典的 AC自己主动机 + 数位DP 的题目. 首先使用AC自己主动机,得到bcd[i][j]表示状态i,加了数字j以后到达的状态.为-1表示不能转移 然后就是数位DP了 注意记录为0的状态 AC代码: #include <cstdio> #include <iostream> #include <cstring> #include <algo…

DNA Sequence 题意:DNA的序列由ACTG四个字母组成,如今给定m个不可行的序列.问随机构成的长度为n的序列中.有多少种序列是可行的(仅仅要包括一个不可行序列便不可行).个数非常大.对100000取模. 思路:推荐一个博客,讲的很清楚. 这样的题目.n非常大,首先想到的就是用矩阵来优化.那么怎样构造转移方程呢:首先建立一棵Trie,然后依照AC自己主动机的方式构造fail指针,然后会发现.当一个状态分别加入ACTG之后,会得到还有一个状态. (详细解释见代码) 代码: /* ID:…

Description Liyuan lives in a old apartment. One day, he suddenly found that there was a wireless network in the building. Liyuan did not know the password of the network, but he got some important information from his neighbor. He knew the password…

标题效果: 举个很多种DNA弦,每个字符串值值至1.最后,一个长字符串.要安排你最后一次另一个字符串,使其没事子值和最大. IDEAS: 首先easy我们的想法是想搜索的!管她3721..直接一个字符一个字符的码,然后在AC自己主动机上推断最后的权值.TLE哟. 然后发现搜过不去.那就dp咯.再easy想到的就是dp[i][a][b][c][d] 表示此时遍历AC自己主动机的节点在i,然后构成了a个A,b个G,c个C.d个T的权值. 再一看内存,500*40*40*40*40...然后...就没…

Walk Through Squares Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 65535/65535 K (Java/Others) Total Submission(s): 944 Accepted Submission(s): 277 Problem Description On the beaming day of 60th anniversary of NJUST, as a military college whic…

DNA repair Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 5877   Accepted: 2760 Description Biologists finally invent techniques of repairing DNA that contains segments causing kinds of inherited diseases. For the sake of simplicity, a…

Description   On the beaming day of 60th anniversary of NJUST, as a military college which was Second Artillery Academy of Harbin Military Engineering Institute before, queue phalanx is a special landscape.      Here is a M*N rectangle, and this one…