[题解]CF264B Good Sequences 具有很明显的无后效性. 考虑\(dp\). 考虑初始条件,显然是\(dp(0)=0\) 考虑转移,显然是\(dp(t)=max(dp[k])+1\)其中\(gcd(data[t],data[k])>1\) 这样的转移是\(O(n^2)\)的!显然超时. 发现值域\(\le 100000\)那么我们将数拆成它的质因数. 线性筛素数预处理\([1,100000]\)的质数\(O(n)\)的代价.存下来. 然后转移的时候,先直接\(O(\sqrt{n…

解题报告:dp+数论 解题报告: 传送门! 开始看这题的时候想挂了,,,想了个显然是错解的想法,,,就是,我也不知道我怎么想的,鬼迷心窍地就想开个数组存每个质因数的倍数的出现次数,然后排下序的max就是ans了,,,显然的一个错解,但是其实给正解提供了一点点启发 还是先说一个对正解毫无启发的暴力趴 就是个最简单的dp,当做最长上升子序列这种做,n2转移即可 显然是过不了的 然后我们既然想到最长上升子序列了,就应该能想起,那种题目其实可以二分然后O(nlogn)地过去,举一反三一下,这题484也能…

传送门 Description: 松鼠丽丝特别喜欢n个她称之为“好整数”的整数:a1,a2,……,an.(会输入) 现在,她对“好序列”很感兴趣.如果一个序列x1,x2,...,xk能够满足一下三个条件,那就是一个“好序列”: 1.该序列是严格上升的,即x[i]<x[i+1](1<=i<=k-1) 2.任意两个相邻的元素是非互质的,即gcd(x[i],x[i+1])>1 (1<=i<=k-1) (gcd即最大公约数) 3.所有的数字都是“好整数” 现在,请你找出长度最长…

All DNA is composed of a series of nucleotides abbreviated as A, C, G, and T, for example: "ACGAATTCCG". When studying DNA, it is sometimes useful to identify repeated sequences within the DNA. Write a function to find all the 10-letter-long seq…

All DNA is composed of a series of nucleotides abbreviated as A, C, G, and T, for example: "ACGAATTCCG". When studying DNA, it is sometimes useful to identify repeated sequences within the DNA. Write a function to find all the 10-letter-long seq…

Weilin Huang--[AAAI2016]Reading Scene Text in Deep Convolutional Sequences 目录 作者和相关链接 方法概括 创新点和贡献 方法细节 实验结果 问题讨论 总结与收获点 参考文献 作者和相关链接 论文下载 黄伟林主页 , 乔宇,汤晓欧 所有作者 方法概括 解决问题:单词识别 主要流程:maxout版的CNN提取特征,RNN(LSTM)进行分类,CTC对结果进行调整.整个流程端到端训练和测试,和白翔的CRNN(参考文献1)方法几…

All DNA is composed of a series of nucleotides abbreviated as A, C, G, and T, for example: "ACGAATTCCG". When studying DNA, it is sometimes useful to identify repeated sequences within the DNA. Write a function to find all the 10-letter-long seq…

Problem Introduction In this problem, your goal is to compute the length of a longest common subsequence of three sequences. Problem Description Task.Given three sequences \(A=(a_1,a_2,\cdots,a_n)\); \(B = (b_1, b_2,\cdots,b_m)\), and \(C=(c_1,c_2,\c…

序列是指有序的队列,重点在"有序". 一.Python中序列的分类 Python中的序列主要以下几种类型: 3种基本序列类型(Basic Sequence Types):list.tuple.range 专门处理文本的附加序列类型(Text Sequence Types):str 专门处理二进制数据的附加序列类型(Binary Sequence Types): bytes.bytearray.memoryview 按照序列是否可被改变分类: 可变序列: list 不可变序列:tuple…

cut -d " " -f 1 sequences.fa | tr -s "\n" "\t"| sed -s 's/>/\n/g' > sequences.tab while read id start end; do \ g=$(grep "$id" sequences.tab | cut -f 2 | cut -c $start-$end);\ echo ">$id";\ echo $…