Description给你一个长度为$n$的序列$A$.现在准许你删除任意一个数,删除之后需要修改最小的次数使序列单调递增.问最小次数.$1≤n≤200000$ExamplesInput55 4 3 2 1Output3Input51 2 8 9 5Output0 因为是修改形成递增,所以假设修改$l+1~r-1$,那么要求$a[r]-a[l]-1>=r-l-1$ 于是有$a[r]-r>=a[l]-l$ 于是就转化为求最长不下降子序列 因为可以删一个点,删掉的点的后面的值减去的位权-1 设$f…

题目链接   Educational Codeforces Round 39 Problem G 题意  给定一个序列,求把他变成Almost Increasing Array需要改变的最小元素个数. Almost Increasing Array为删掉至多一个元素之后可以成为严格递增子序列的数列. 这类题有个常见的套路,就是对每个元素减去下标之后求LIS. 这道题中可以删去一个元素,我们可以枚举哪个元素是被删掉的, 那么他之前的元素求LIS的时候真正的值为$a_{i} - i$,他之后的元素求…

Description 题库链接 给你一个长度为 \(n\) 的序列 \(A\) .现在准许你删除任意一个数,删除之后需要修改最小的次数使序列单调递增.问最小次数. \(1\leq n\leq 200000\) Solution 注意到如果不要删除一个数的话,显然这就是一个模型问题了.只需要求出序列中每个数减去其位权,求出最长单调不下降子序列长度 \(len\) .答案就是 \(n-len\) . 但要删除一个数的话就不好直接做了,考虑问题出在了哪里. 因为删除一个数后,这个数之后的所有位权都…

大意: 定义几乎递增序列为删除不超过一个数后序列严格递增. 给定序列, 求最少改变多少个数能变为几乎递增序列. 跟hdu5256类似,…

总体感觉这次出的题偏数学,数学若菜表示果断被虐.不过看起来由于大家都被虐我2题居然排到331,rating又升了74.Div2-AA. The Walltime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputIahub and his friend Floyd have started painting a wall. Iahub is paintin…

A sequence X_1, X_2, ..., X_n is fibonacci-like if: n >= 3 X_i + X_{i+1} = X_{i+2} for all i + 2 <= n Given a strictly increasing array A of positive integers forming a sequence, find the length of the longest fibonacci-like subsequence of A.  If on…

A sequence X_1, X_2, ..., X_n is fibonacci-like if: n >= 3 X_i + X_{i+1} = X_{i+2} for all i + 2 <= n Given a strictly increasing array A of positive integers forming a sequence, find the length of the longest fibonacci-like subsequence of A.  If on…

In an election, the i-th vote was cast for persons[i] at time times[i]. Now, we would like to implement the following query function: TopVotedCandidate.q(int t) will return the number of the person that was leading the election at time t. Votes cast…

题目链接:传送门 题目: A. A Prank time limit per test second memory limit per test megabytes input standard input output standard output JATC and his friend Giraffe are currently in their room, solving some problems. Giraffe has written on the board an array a…

In an election, the i-th vote was cast for persons[i] at time times[i]. Now, we would like to implement the following query function: TopVotedCandidate.q(int t) will return the number of the person that was leading the election at time t. Votes cast…

A sequence X_1, X_2, ..., X_n is fibonacci-like if: n >= 3 X_i + X_{i+1} = X_{i+2} for all i + 2 <= n Given a strictly increasing array A of positive integers forming a sequence, find the length of the longest fibonacci-like subsequence of A.  If on…

英文版A sequence X_1, X_2, ..., X_n is fibonacci-like if: - n >= 3- X_i + X_{i+1} = X_{i+2} for all i + 2 <= n Given a strictly increasing array A of positive integers forming a sequence, find the length of the longest fibonacci-like subsequence of A.…

0x00--背景和目的 在单台PC服务器上部署Redis集群,通过不同的TCP端口启动多实例,模拟多台独立PC组成集群. 0x01--环境描述: Centos版本:CentOS Linux release (Core) Redis版本:Redis (/) bit 安装方式:源码安装 0x02--编辑Redis实例配置文件 在根目录下新建/redis_cluster目录,用于存放多实例配置文件,这里使用6个TCP端口,编写6029--6034共计6个配置文件,使用折6个配置文件启动实例,并搭建Re…

A. A Prank time limit per test   1 second memory limit per test    256 megabytes 题目链接:https://codeforc.es/contest/1062/problem/A Description: JATC and his friend Giraffe are currently in their room, solving some problems. Giraffe has written on the b…

In an election, the i-th vote was cast for persons[i] at time times[i]. Now, we would like to implement the following query function: TopVotedCandidate.q(int t) will return the number of the person that was leading the election at time t.   Votes cas…

原题链接在这里:https://leetcode.com/problems/online-election/ 题目: In an election, the i-th vote was cast for persons[i] at time times[i]. Now, we would like to implement the following query function: TopVotedCandidate.q(int t) will return the number of the…

原题链接在这里:https://leetcode.com/problems/length-of-longest-fibonacci-subsequence/ 题目: A sequence X_1, X_2, ..., X_n is fibonacci-like if: n >= 3 X_i + X_{i+1} = X_{i+2} for all i + 2 <= n Given a strictly increasing array A of positive integers forming…

A sequence X_1, X_2, ..., X_n is fibonacci-like if: n >= 3 X_i + X_{i+1} = X_{i+2} for all i + 2 <= n Given a strictly increasing array A of positive integers forming a sequence, find the length of the longest fibonacci-like subsequence of A.  If on…

Educational Codeforces Round 39  D. Timetable 令\(dp[i][j]\)表示前\(i\)天逃课了\(j\)节课的情况下,在学校的最少时间 转移就是枚举第\(i\)天逃了\(x\)节课,然后取当天逃\(x\)节课情况下在学校的最小值即可 view code #pragma GCC optimize("O3") #pragma GCC optimize("Ofast,no-stack-protector") #include…

[LeetCode]911. Online Election 解题报告(Python) 作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 题目地址:https://leetcode.com/problems/online-election/description/ 题目描述: In an election, the i-th vote was cast for persons[i] at time times[i]. Now, we…

[LeetCode]873. Length of Longest Fibonacci Subsequence 解题报告(Python) 标签(空格分隔): LeetCode 作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 题目地址:https://leetcode.com/problems/length-of-longest-fibonacci-subsequence/description/ 题目描述: A sequence X_…

题目如下: Given two integer arrays arr1 and arr2, return the minimum number of operations (possibly zero) needed to make arr1 strictly increasing. In one operation, you can choose two indices 0 <= i < arr1.length and 0 <= j < arr2.length and do th…

http://www.geeksforgeeks.org/longest-monotonically-increasing-subsequence-size-n-log-n/ #include <iostream> #include <vector> #include <algorithm> #include <queue> #include <stack> #include <string> #include <fstream…

Given an unsorted array return whether an increasing subsequence of length 3 exists or not in the array. Formally the function should: Return true if there exists i, j, k such that arr[i] < arr[j] < arr[k] given 0 ≤ i < j < k ≤ n-1 else return…

Given an unsorted array of integers, find the length of longest increasing subsequence. For example, Given [10, 9, 2, 5, 3, 7, 101, 18], The longest increasing subsequence is [2, 3, 7, 101], therefore the length is 4. Note that there may be more than…

1. Description Given an unsorted array return whether an increasing subsequence of length 3 exists or not in the array. Formally the function should: Return true if there exists i, j, k such that arr[i] < arr[j] < arr[k] given 0 ≤ i < j < k ≤…

Given a sequence of integers, find the longest increasing subsequence (LIS). You code should return the length of the LIS. Have you met this question in a real interview?     Example For [5, 4, 1, 2, 3], the LIS  is [1, 2, 3], return 3 For [4, 2, 4,…

Given a sequence of integers, find the longest increasing subsequence (LIS). You code should return the length of the LIS. Example For [5, 4, 1, 2, 3], the LIS  is [1, 2, 3], return 3 For [4, 2, 4, 5, 3, 7], the LIS is [4, 4, 5, 7], return 4 Challeng…

原题链接在这里:https://leetcode.com/problems/minimum-moves-to-equal-array-elements/ 题目: Given a non-empty integer array of size n, find the minimum number of moves required to make all array elements equal, where a move is incrementing n - 1 elements by 1.…

Given a sorted array of integers nums and integer values a, b and c. Apply a function of the form f(x) = ax2 + bx + c to each element x in the array. The returned array must be in sorted order. Expected time complexity: O(n) Example: nums = [-4, -2,…