思路: 首先得做个转化,如果某个解法最终分别对a[i](i = 1, 2, ..., n)做了b[i](i = 1, 2, ..., n)次加1再取余的运算,那么可以等价地构造出x次(x = max(b[i]))题目定义的操作,这样就可以直接对x二分了. 实现: #include <bits/stdc++.h> using namespace std; ; int a[N], n, m; bool check(int x) { ; ; i <= n; i++) { if (a[i] +…

给定n个模m的数字 可以选择k个数字进行操作,操作时对该数字进行+1模m 求解最少多少次操作可以使得该数列变成单调不下降序列 实际上就是二分操作数目,其中操作数目肯定不会超过m 然后我们将左右边界变成0和m 二分操作数 以下几种情况可以进行操作 当前数字小于等于上一次保存的数字并且加上操作数>上一次的数字,也就说明该数可以进行操作,但是为了保证贪心,我们可以让该数字变化成上一次操作的数字,其实就是不改变上一次保存的数字,直接continue 如果当前数字大于上次保存的数字,并且+x-m之后可以>…

链接:https://codeforces.com/contest/1169/problem/C 题意: Toad Zitz has an array of integers, each integer is between 00 and m−1m−1 inclusive. The integers are a1,a2,…,ana1,a2,…,an. In one operation Zitz can choose an integer kk and kk indices i1,i2,…,iki…

题目链接:http://codeforces.com/problemset/problem/1168/A 题意:给一个数组,数组中元素范围为0~n,每次你可以选择若干元素进行(ai+1)%m的操作,问使数组呈非递增的最小操作次数. 思路:因为每次都可以选若干个元素,用贪心思想,假设要操作x次,第一个元素加上x若能超过m,则对m取模最小值为0,令其等于0就好了,后面每个元素加上x后,对m取模后只要不比前面小就好了,则依次判断数组的每个元素能否满足,利用二分搜索来寻找 操作数 x,x即为答案. AC…

All Possible Increasing Subsequences Time Limit:3000MS     Memory Limit:65536KB     64bit IO Format:%lld & %llu Appoint description:  Description An increasing subsequence from a sequence A1, A2 ... An is defined by Ai1, Ai2 ... Aik, where the follow…

觉得有必要在NOI之前开一篇学习内容记录. 至于为什么要取这个标题呢?也许并没有什么特殊的借口吧. 5.23 在LOJ上搬了三道原题给大家考了考,然后大家都在考试就我一个人在划水. SSerxhs 和 Serval 的退役纪念赛 A.幼儿园唱歌题 给一个串\(S\),\(q\)次询问满足是串\(S[l_1,r_1]\)的前缀且是串\(S[l_2,r_2]\)的后缀的最长回文串长度.\(|S|,q\le2\times10^5\) 把串\(S\)反过来接在后面建回文树,然后就是求两个点的公共祖先中深…

A - Circle Metro 模拟几百步就可以了. B - Pairs 爆搜一下,时间复杂度大概是 $O(4 * n)$ Code: 56306723 C - Increasing by Modulo 二分答案,然后验证一下就好了,第一个数越小越好,之后的数都要求和前一个相等或者大一点.复杂度 $n * log(n)$ D - Good Triple 对于每一个 $i$,需要计算出最小的 $x$,使得 $s[i-x] = s[x] = s[i + x]$,对于 $i$ 而言,如果区间左端点在…

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 integer matrix, find the length of the longest increasing path. From each cell, you can either move to four directions: left, right, up or down. You may NOT move diagonally or move outside of the boundary (i.e. wrap-around is not allowed). E…

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…

error: unable to rewind rpc post data - try increasing http.postBuffererror: RPC failed; curl 56 Recv failure: Connection was abortedfatal: The remote end hung up unexpectedly 当使用git 一次提交的数据过大时,会出现以上错误,按照提示我们增大postBuffer git config --global http.post…

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 ≤…

Longest Increasing Subsequence(LIS) 一个美丽的名字 非常经典的线性结构dp [朴素]:O(n^2) d(i)=max{0,d(j) :j<i&&a[j]<a[i]}+1 直接两个for [二分查找优化]:O(n^2) g(i):d值为i的最小的a  每次更新然后lower_bound即可 ［大于等于］ lower_boundReturn iterator to lower bound Returns an iterator pointing…

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…

Given an integer matrix, find the length of the longest increasing path. From each cell, you can either move to four directions: left, right, up or down. You may NOT move diagonally or move outside of the boundary (i.e. wrap-around is not allowed). E…

题目 Given an integer matrix, find the length of the longest increasing path. From each cell, you can either move to four directions: left, right, up or down. You may NOT move diagonally or move outside of the boundary (i.e. wrap-around is not allowed)…

传送门:BNUOJ 52325 Increasing or Decreasing题意:求[l,r]非递增和非递减序列的个数思路:数位dp,dp[pos][pre][status] pos:处理到第几位 pre:前一位是什么 status:是否有前导零 递增递减差不多思路,不过他们计算的过程中像5555,444 这样的重复串会多算,所以要剪掉.个数是(pos-1)*9+digit[最高位],比如一位重复子串是:1,2,3,4...9,9个,二位重复子串:11,22,33,44,...,99,9个:…

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 o…

B. Modulo Sum time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output You are given a sequence of numbers a1, a2, ..., an, and a number m. Check if it is possible to choose a non-empty subsequence…

Given an integer matrix, find the length of the longest increasing path. From each cell, you can either move to four directions: left, right, up or down. You may NOT move diagonally or move outside of the boundary (i.e. wrap-around is not allowed). E…

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…

Give an integer array,find the longest increasing continuous subsequence in this array. An increasing continuous subsequence: Can be from right to left or from left to right. Indices of the integers in the subsequence should be continuous. Notice O(n…

09-Dec-2016 10:57:49.150 WARNING [localhost-startStop-1] org.apache.catalina.webresources.Cache.getResource Unable to add the resource at [/WEB-INF/classes/struts/PersonnelActio n.xml] to the cache because there was insufficient free space available…

tomcat重启后报以下错误: 09-Dec-2016 10:57:49.150 WARNING [localhost-startStop-1] org.apache.catalina.webresources.Cache.getResource Unable to add the resource at [/WEB-INF/classes/struts/PersonnelActio n.xml] to the cache because there was insufficient free…

Longest Increasing Subsequence 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. Not…

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 ≤ n-…

题目链接: B. Modulo Sum time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output You are given a sequence of numbers a1, a2, ..., an, and a number m. Check if it is possible to choose a non-empty subse…

Raising Modulo Numbers Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 6373   Accepted: 3760 Description People are different. Some secretly read magazines full of interesting girls' pictures, others create an A-bomb in their cellar, oth…

最长上升公共子序列(Longest Increasing Common Subsequence,LICS)也是经典DP问题,是LCS与LIS的混合. Problem 求数列 a[1..n], b[1..m]的LICS的长度, a[], b[]数组的元素均为正整数. Solution 考虑如何定义DP状态,定义DP状态就是定义所谓的最优子问题(optimal subproblem),而DP状态要能转移,就是所谓最优子问题要具有重叠子结构. 将DP状态定义为 DP[i][j]:a[1..i], b[…