题目大意是:给定两组DNA序列,要你求出它们的最大相似度 每个字母与其他字母或自身和空格对应都有一个打分,求在这两个字符串中插入空格,让这两个字符串的匹配分数最大 /* 思路是很好想的,设f[i][j]为A染色体前i个基因和B染色体前j个基因匹配的最大值 第一次测样例WA了一把,f又没有赋最小值,今天第二次了,幸亏样例测出来了,不然又要WA一次. */ #include<cstdio> #include<iostream> #include<cstring> #defi…

Human Gene Functions Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 19573   Accepted: 10919 Description It is well known that a human gene can be considered as a sequence, consisting of four nucleotides, which are simply denoted by four…

题意: 人类基因由A.C.G.T组成. 有一张5*5的基因表.每格有一个值,叫相似度.例:A-C:-3.意思是如果A和C配对, 则它俩的相似度是-3[P.S.:-和-没有相似度,即-和-不能配对] 现在给两条基因片段.(长度不一定相等) 现在你要在两条基因片段中插入若干个-(空白基因),使得两个基因片段长度相等,且得到的整体相似度的值最大.[再次P.S.:-和-不能配对] 思路: 因为-和-不能匹配,所以插入的-的个数是有限的. str1的第一个基因可以与str1的第一个或-配对.然后,,,,很…

题目: Problem Description It is well known that a human gene can be considered as a sequence, consisting of four nucleotides, which are simply denoted by four letters, A, C, G, and T. Biologists have been interested in identifying human genes and deter…

题意:求出将两个字符串改成一样长度所能形成最大的相似度. 思路:这个可以说是编辑距离的一个变形,编辑距离最终状态时要两个字符串完全一致,这个就是要求长度一样,而且这个只允许插入“—”这一个字符.模仿编辑距离定义状态,dp[i][j]表示将第一个字符串的前i个字符与第二个字符串的前j个字符变为相同长度所能形成的最大相似度.设两个字母的相似度为g[i][j]; 那状态转移为 dp[i][j] = max( dp[i][j-1] + g[j][5], d[i-1][j] + g[i][5],dp[i-…

题目链接 题目:给出两个串,每匹配一种有一种权值,求权值最大的匹配串 就是 最长公共子序列的 的思想: 首先对于 i 和 j 来比较, 一种情况是i和j匹配,此时 dp[i][j] = dp[i - 1][j - 1] + g[ str1[i] ][ str2[j] ],另一种情况是i和j不匹配,那么就有两种情况,一 i 和 j前面的匹配,j与一个空 即 ‘ - ’匹配,dp[i][j] = dp[i ][ j - 1] + g[ ' - ' ][ str2[j] ] ,二 i 前面的 和 j匹…

[POJ 1080] Human Gene Functions 相似于最长公共子序列的做法 dp[i][j]表示 str1[i]相应str2[j]时的最大得分 转移方程为 dp[i][j]=max(dp[i-1][j-1]+score[str1[i]][str2[j]], max(dp[i-1][j]+score[str1[i]]['-'],dp[i][j-1]+score['-'][str2[j]]) ) 注意初始化0下标就好 代码例如以下: #include <iostream> #inc…

Human Gene Functions Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 17805   Accepted: 9917 Description It is well known that a human gene can be considered as a sequence, consisting of four nucleotides, which are simply denoted by four…

Human Gene Functions Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 18007   Accepted: 10012 Description It is well known that a human gene can be considered as a sequence, consisting of four nucleotides, which are simply denoted by four…

Human Gene Functions Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 3103    Accepted Submission(s): 1761 Problem Description It is well known that a human gene can be considered as a sequence,…