题目描述 You are given an integer array of length n. You have to choose some subsequence of this array of maximum length such that this subsequence forms a increasing sequence of consecutive integers. In other words the required sequence should be equal…

Consecutive Subsequence CodeForces - 977F 题目大意:输出一序列中的最大的连续数列的长度和与其对应的下标(连续是指 7 8 9这样的数列) 解题思路: 状态:把dp[i]定义为数列末尾为 i 的最大连续数列的长度值 状态转移方程:dp[i] = dp[i-1] + 1 再由最大连续数列最后一个值从后往前倒推出前面的所有值,到不是连续时停止 代码: #include<bits/stdc++.h> using namespace std; + ; int d…

F. Consecutive Subsequence time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output You are given an integer array of length nn. You have to choose some subsequence of this array of maximum length…

You are given an integer array of length nn. You have to choose some subsequence of this array of maximum length such that this subsequence forms a increasing sequence of consecutive integers. In other words the required sequence should be equal to […

You are given an integer array of length nn. You have to choose some subsequence of this array of maximum length such that this subsequence forms a increasing sequence of consecutive integers. In other words the required sequence should be equal to […

该算法的定义是:给出一个int序列,元素有正有负,找出其中的最大连续子序列的和. 例如:-2,11,-4,13,-5-2,:最大和为20(11,-4, 13). 怎么考虑这个问题呢? 要充分利用,连续,这个条件. 连续子序列的和可能为正,也可能为负.如果为正,那么我们要继续加下去,因为如果后面一个数是正数, 最大子序列和必定包括前序列的和(毕竟前者和为正),如果后面一个是负数,我们也加,直到子序列的和不为正为止. 因为它不为正,所以如果后面有更大的连续子序列,那么也不会包括它,因为加上一个非正数…

题目:https://codeforces.com/problemset/problem/977/F 题意:一个序列,求最长单调递增子序列,但是有一个要求是中间差值都是1 思路:dp,O(n)复杂度,我们想一下O(n^2)时的最长递增子序列,我们第二个循环要遍历前面所有的如果大于长度就加1,代表以这个数结尾的最长长度是多少, 因为中间差值不定,所以我们遍历整个循环,这个题设置中间差值只能是1,所以我们递推式就可以是   dp[i]=max(dp[i],dp[i-1]+1),用map来映射值即可…

题目链接:http://codeforces.com/problemset/problem/977/F 题意: 给定一个长度为 $n$ 的整数序列 $a[1 \sim n]$,要求你找到一个它最长的一个子序列,该子序列满足单调连续递增. 子序列可以不连续,单调连续递增即例如 $[4,5,6,7]$ 或者 $[6,7,8,9,10]$ 这样的. 题解: $f[i]$ 表示以 $a[i]$ 为结尾的最长连续递增子序列,那么要转移就需要找到 $[1,i-1]$ 这个区间内,某个满足 $a[j] = a…

题意: 第一场div3, 求的是一个序列中最长连续(a,a+1,a+2...)子序列. 分析: 设一个DP[i] 表示 序列以i结尾的最长长度, 一开始都设为0. 那么如果这个数是a, 他的最长长度就是 Dp[a-1] + 1, 最后找出最大那个值就是答案, 倒回去输出序列就可以了 #include <bits/stdc++.h> using namespace std; ; int a[maxN]; map<int, int> dp; int main(){ ios::sync_…

[链接] 我是链接,点我呀:) [题意] 题意 [题解] 设f[i]表示i作为序列的最后一个数字,最长的连续序列的长度. 用f[i]和f[i-1]+1来转移即可 [代码] import java.io.*; import java.util.*; public class Main { static InputReader in; static PrintWriter out; public static void main(String[] args) throws IOException{…

题意:给你一个长度为\(n\)的序列,求一个最长的\({x,x+1,x+2,.....,x+k-1}\)的序列,输出它的长度以及每个数在原序列的位置. 题解:因为这题有个限定条件,最长序列是公差为\(1\)的单增序列,所以其实非常简单. ​ 我们用\(map\)来记录每个元素最后出现的位置,\(dp\)表示当前位置的最长序列,\(last\)表示\(x-1\)的位置. ​ \(dp\)状态有两种更新方式: 1.如果上个元素\((x-1)\)存在,则\(dp[i]=dp[x-1]+1\). ​ 2…

N-Gram是大词汇连续语音识别中常用的一种语言模型,对中文而言,我们称之为汉语语言模型(CLM, Chinese Language Model).   中文名 汉语语言模型 外文名 N-Gram 定    义 计算出具有最大概率的句子 基    于 该模型基于这样一种假设 汉语语言模型利用上下文中相邻词间的搭配信息,在需要把连续无空格的拼 音.笔划,或代表字母或笔划的数字,转换成汉字串(即句子)时,可以计算出具有最大概率的句子,从而实现到汉字的自动转换,无需用户手动选择,避开了许多 汉字对应一…

C. Vasya and String 题目链接:http://codeforces.com/contest/676/problem/C High school student Vasya got a string of length n as a birthday present. This string consists of letters 'a' and 'b' only. Vasya denotes beauty of the string as the maximum length…

Description You are given a sequence of integers, A = a1, a2, ... an. A consecutive subsequence of A (say ai, ai+1 ... aj) is called a "repeated sequence" if it appears more than once in A (there exists some positive k that ai+k = ai, ai+k+1 = a…

DP + 单调队列优化 + 平衡树 好题 Description Given an integer sequence { an } of length N, you are to cut the sequence into several parts every one of which is a consecutive subsequence of the original sequence. Every part must satisfy that the sum of the intege…

题目链接: C. Vasya and String time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output High school student Vasya got a string of length n as a birthday present. This string consists of letters 'a' and '…

时间限制:10000ms 单点时限:1000ms 内存限制:256MB 描述 You are given a sequence of integers, A = a1, a2, ... an. A consecutive subsequence of A (say ai, ai+1 ... aj) is called a "repeated sequence" if it appears more than once in A (there exists some positive k…

sum Accepts: 640 Submissions: 1744 Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others) Problem Description Given a sequence, you're asked whether there exists a consecutive subsequence whose sum is divisible by m. outpu…

sum 题目链接: http://acm.hdu.edu.cn/showproblem.php?pid=5776 Description Given a sequence, you're asked whether there exists a consecutive subsequence whose sum is divisible by m. output YES, otherwise output NO Input The first line of the input has an i…

BIGSEQ - Sequence You are given the sequence of all K-digit binary numbers: 0, 1,..., 2K-1. You need to fully partition the sequence into M chunks. Each chunk must be a consecutive subsequence of the original sequence. Let Si (1 ≤ i ≤ M) be the total…

大晚上的更一道下午的水题吧.(虽然WA了好多次= =,但真实情况是我比较水) 描述 Given a sequence, you're asked whether there exists a consecutive subsequence whose sum is divisible by m. output YES, otherwise output NO. 输入 The first line of the input has an integer T (1≤T≤10), which repr…

You are given the sequence of all K-digit binary numbers: 0, 1,..., 2K-1. You need to fully partition the sequence into M chunks. Each chunk must be a consecutive subsequence of the original sequence. Let Si (1 ≤ i ≤ M) be the total number of 1's in…

Cut the Sequence Time Limit: 2000MS   Memory Limit: 131072K Total Submissions: 8764   Accepted: 2576 Description Given an integer sequence { an } of length N, you are to cut the sequence into several parts every one of which is a consecutive subseque…

Vasya and String time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output High school student Vasya got a string of length n as a birthday present. This string consists of letters 'a' and 'b' only.…

Sequence query Time Limit: 2000/1000MS (Java/Others) Memory Limit: 128000/64000KB (Java/Others) SubmitStatus Problem Description Given a sequence of  N positive numbers,and M queries A query maybe : 1 x,find the Maximun "weight" of the consecuti…

sum Accepts: 640 Submissions: 1744 Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others) Problem Description Given a sequence, you're asked whether there exists a consecutive subsequence whose sum is divisible by m. outpu…

原题链接 C. Vasya and String High school student Vasya got a string of length n as a birthday present. This string consists of letters 'a' and 'b' only. Vasya denotes beauty of the string as the maximum length of a substring (consecutive subsequence) con…

Xi, a developmental biologist is working on developmental distances of chromosomes. A chromosome, in the Xi's simplistic view, is a permutation from n genes numbered 1 to n. Xi is working on an evolutionary distance metric between two chromosomes. In…

1104. Sum of Number Segments (20) 时间限制 200 ms 内存限制 65536 kB 代码长度限制 16000 B 判题程序 Standard 作者 CAO, Peng Given a sequence of positive numbers, a segment is defined to be a consecutive subsequence. For example, given the sequence {0.1, 0.2, 0.3, 0.4}, we…

sum Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others) Total Submission(s): 2547 Accepted Submission(s): 973 Problem Description Given a sequence, you're asked whether there exists a consecutive subsequence whose sum i…