07 2019 档案

摘要:A Simple Problem with Integers Time Limit: 5000MS Memory Limit: 131072K Total Submissions: 163977 Accepted: 50540 Case Time Limit: 2000MS Description 阅读全文
posted @ 2019-07-29 21:16 知道了呀~ 阅读(296) 评论(0) 推荐(0) 编辑
摘要:Buy Tickets Time Limit: 4000MS Memory Limit: 65536K Total Submissions: 26443 Accepted: 12639 Description Railway tickets were difficult to buy around 阅读全文
posted @ 2019-07-29 15:44 知道了呀~ 阅读(297) 评论(0) 推荐(0) 编辑
摘要:线段树它是一棵高度平衡的二叉树,很多二叉树的性质它是完美继承的 我们来看一道题: HDU1166敌兵布阵 这道题如果用常规暴力的做法,就把所有营地的士兵存在一个数组里面,然后对于每次操作直接更新对应位置的数,对于每次询问直接从i到j加起来。然而这么操作下来,对于极限数据50000个人,40000条命 阅读全文
posted @ 2019-07-28 21:26 知道了呀~ 阅读(643) 评论(0) 推荐(0) 编辑
摘要:E.Easy Climb Somewhere in the neighborhood we have a very nice mountain that gives a splendid view over the surrounding area. There is one problem tho 阅读全文
posted @ 2019-07-28 17:16 知道了呀~ 阅读(326) 评论(0) 推荐(0) 编辑
摘要:我们从最简单的问题开始: 给定一个长度为N的整数数列a(i),i=0,1,...,N-1和窗长度k. 要求: f(i) = max{a(i-k+1),a(i-k+2),..., a(i)},i = 0,1,...,N-1 问题的另一种描述就是用一个长度为k的窗在整数数列上移动,求窗里面所包含的数的最 阅读全文
posted @ 2019-07-28 10:14 知道了呀~ 阅读(374) 评论(0) 推荐(0) 编辑
摘要:Feel Good Time Limit: 3000MS Memory Limit: 65536KTotal Submissions: 11626 Accepted: 3212Case Time Limit: 1000MS Special JudgeDescriptionBill is develo 阅读全文
posted @ 2019-07-27 15:27 知道了呀~ 阅读(297) 评论(0) 推荐(0) 编辑
摘要:链接:https://vjudge.net/problem/UVA-1363 题意:给出n k,当 i 属于 1~n 时 ,求解 n% i 的和 n 和 k 的范围都是 1 到 10^9; 商相同 的余数数列 是 公差为商 的 递减等差数列 应该让k / i相等的一连串k % i相加,举个例子: 1 阅读全文
posted @ 2019-07-26 21:16 知道了呀~ 阅读(394) 评论(0) 推荐(0) 编辑
摘要:Ignatius and the Princess IV Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32767 K (Java/Others)Total Submission(s): 50812 Accepted Submi 阅读全文
posted @ 2019-07-25 17:25 知道了呀~ 阅读(183) 评论(0) 推荐(0) 编辑
摘要:Ignatius and the Princess II Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 12948 Accepted Submi 阅读全文
posted @ 2019-07-25 17:23 知道了呀~ 阅读(261) 评论(0) 推荐(0) 编辑
摘要:Problem C Updating a Dictionary In this problem, a dictionary is collection of key-value pairs, where keys are lower-case letters, and values are non- 阅读全文
posted @ 2019-07-25 11:45 知道了呀~ 阅读(295) 评论(0) 推荐(0) 编辑
摘要:{A} + {B} Time Limit: 10000/5000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 33500 Accepted Submission(s): 13448 Pr 阅读全文
posted @ 2019-07-24 22:45 知道了呀~ 阅读(287) 评论(0) 推荐(0) 编辑
摘要:The kth great number Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65768/65768 K (Java/Others)Total Submission(s): 16226 Accepted Submission(s) 阅读全文
posted @ 2019-07-24 22:41 知道了呀~ 阅读(275) 评论(0) 推荐(0) 编辑
摘要:Word Amalgamation Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 9968 Accepted: 4774 Description In millions of newspapers across the Unit 阅读全文
posted @ 2019-07-24 21:55 知道了呀~ 阅读(294) 评论(0) 推荐(0) 编辑
摘要:B. Misha and Changing Handles time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Misha hacke 阅读全文
posted @ 2019-07-24 21:09 知道了呀~ 阅读(391) 评论(0) 推荐(0) 编辑
摘要:Let the Balloon Rise Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 165255 Accepted Submission(s 阅读全文
posted @ 2019-07-24 14:55 知道了呀~ 阅读(207) 评论(0) 推荐(0) 编辑
摘要:Avin meets a rich customer today. He will earn 1 million dollars if he can solve a hard problem. There are n warehouses and m workers. Any worker in t 阅读全文
posted @ 2019-07-23 21:07 知道了呀~ 阅读(470) 评论(0) 推荐(0) 编辑
摘要:vin is observing the cars at a crossroads. He finds that there are n cars running in the east-west direction with the i-th car passing the intersectio 阅读全文
posted @ 2019-07-23 20:59 知道了呀~ 阅读(400) 评论(0) 推荐(0) 编辑
摘要:B. Email from Polycarp time limit per test 3 seconds memory limit per test 256 megabytes input standard input output standard output Methodius receive 阅读全文
posted @ 2019-07-22 22:12 知道了呀~ 阅读(662) 评论(0) 推荐(0) 编辑
摘要:G. Repeat it time limit per test 2.0 s memory limit per test 64 MB input standard input output standard output G. Repeat it time limit per test 2.0 s 阅读全文
posted @ 2019-07-22 21:47 知道了呀~ 阅读(271) 评论(0) 推荐(0) 编辑
摘要:F. Fairness time limit per test 2.0 s memory limit per test 64 MB input standard input output standard output Dwik and his brother Samir both received 阅读全文
posted @ 2019-07-22 17:33 知道了呀~ 阅读(425) 评论(0) 推荐(0) 编辑
摘要:E. Playing with numbers time limit per test 2.0 s memory limit per test 64 MB input standard input output standard output E. Playing with numbers time 阅读全文
posted @ 2019-07-22 16:10 知道了呀~ 阅读(683) 评论(0) 推荐(0) 编辑
摘要:B. RGB plants time limit per test 2.0 s memory limit per test 64 MB input standard input output standard output B. RGB plants time limit per test 2.0 阅读全文
posted @ 2019-07-21 21:59 知道了呀~ 阅读(317) 评论(0) 推荐(0) 编辑
摘要:J. Cola time limit per test 4.0 s memory limit per test 64 MB input standard input output standard output J. Cola time limit per test 4.0 s memory lim 阅读全文
posted @ 2019-07-21 21:53 知道了呀~ 阅读(394) 评论(0) 推荐(0) 编辑
摘要:Cleaning Shifts Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 40751 Accepted: 9871 Description Farmer John is assigning some of his N (1 阅读全文
posted @ 2019-07-20 16:54 知道了呀~ 阅读(284) 评论(0) 推荐(0) 编辑
摘要:Tian Ji -- The Horse Racing Time Limit: 5000MS Memory Limit: 65536K Total Submissions: 17699 Accepted: 5461 Description Here is a famous story in Chin 阅读全文
posted @ 2019-07-20 16:29 知道了呀~ 阅读(376) 评论(0) 推荐(0) 编辑
摘要:Evil Straw Warts Live Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 1799 Accepted: 523 Description A palindrome is a string of symbols th 阅读全文
posted @ 2019-07-20 10:21 知道了呀~ 阅读(365) 评论(0) 推荐(0) 编辑
摘要:Task Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 13880 Accepted Submission(s): 3420 Problem D 阅读全文
posted @ 2019-07-19 16:22 知道了呀~ 阅读(416) 评论(0) 推荐(0) 编辑
摘要:B. Sport Mafia time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Each evening after the di 阅读全文
posted @ 2019-07-18 16:20 知道了呀~ 阅读(544) 评论(0) 推荐(0) 编辑
摘要:C. Basketball Exercise time limit per test 2 seconds time limit per test memory limit per test 256 megabytes memory limit per test input standard inpu 阅读全文
posted @ 2019-07-18 16:10 知道了呀~ 阅读(466) 评论(0) 推荐(0) 编辑
摘要:Y2K Accounting Bug Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 18534 Accepted: 9346 Description Accounting for Computer Machinists (ACM 阅读全文
posted @ 2019-07-17 17:39 知道了呀~ 阅读(336) 评论(0) 推荐(0) 编辑
摘要:Radar Installation Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 123150 Accepted: 27237 Description Assume the coasting is an infinite st 阅读全文
posted @ 2019-07-17 15:01 知道了呀~ 阅读(390) 评论(0) 推荐(0) 编辑
摘要:链接:https://ac.nowcoder.com/acm/contest/993/C来源:牛客网 题目描述 Farmer John recently bought another bookshelf for the cow library, but the shelf is getting fi 阅读全文
posted @ 2019-07-16 19:38 知道了呀~ 阅读(324) 评论(0) 推荐(0) 编辑
摘要:题目链接:https://ac.nowcoder.com/acm/contest/993/ABessie is playing a card game with her N-1 (2 <= N <= 100) cow friends using a deck with K (N <= K <= 10 阅读全文
posted @ 2019-07-16 16:12 知道了呀~ 阅读(452) 评论(0) 推荐(0) 编辑
摘要:Aggressive cows Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 25944 Accepted: 11982 Description Farmer John has built a new long barn, wi 阅读全文
posted @ 2019-07-15 21:08 知道了呀~ 阅读(384) 评论(0) 推荐(0) 编辑
摘要:E. MaratonIME does (not do) PAs time limit per test 2.0 s memory limit per test 256 MB input standard input output standard output Another semester ha 阅读全文
posted @ 2019-07-15 19:40 知道了呀~ 阅读(485) 评论(0) 推荐(0) 编辑
摘要:B. Yet Another Crosses Problem time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output B. Yet An 阅读全文
posted @ 2019-07-15 15:50 知道了呀~ 阅读(666) 评论(0) 推荐(0) 编辑
摘要:Dating with girls(1) Time Limit: 6000/2000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 5709 Accepted Submission(s): 阅读全文
posted @ 2019-07-14 20:38 知道了呀~ 阅读(387) 评论(0) 推荐(0) 编辑
摘要:Protecting the Flowers Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 11402 Accepted: 4631 Description Farmer John went to cut some wood a 阅读全文
posted @ 2019-07-14 17:23 知道了呀~ 阅读(521) 评论(0) 推荐(0) 编辑
摘要:Doing Homework again Time Limit: 1000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 20510 Accepted Submission(s) 阅读全文
posted @ 2019-07-14 15:22 知道了呀~ 阅读(274) 评论(0) 推荐(0) 编辑
摘要:一、基本概念 所谓贪心算法是指,在对问题求解时,总是做出在当前看来是最好的选择。也就是说,不从整体最优上加以考虑,他所做出的仅是在某种意义上的局部最优解。 贪心算法没有固定的算法框架,算法设计的关键是贪心策略的选择。必须注意的是,贪心算法不是对所有问题都能得到整体最优解,选择的贪心策略必须具备无后效 阅读全文
posted @ 2019-07-14 15:08 知道了呀~ 阅读(356) 评论(0) 推荐(1) 编辑
摘要:E. Third-Party Software - 2 time limit per test 2.0 s memory limit per test 256 MB input standard input output standard output E. Third-Party Software 阅读全文
posted @ 2019-07-13 21:59 知道了呀~ 阅读(455) 评论(0) 推荐(1) 编辑
摘要:Trie树(来自单词retrieval),又称前缀字,单词查找树,字典树,是一种树形结构,是一种哈希树的变种,是一种用于快速检索的多叉树结构。 字典树是处理字符串常见的一种树形数据结构,其优点是利用字符串的公共前缀来节约存储空间 字典树完整结构 实际上每个节点的子节点都应该从0编到——25,但这样会 阅读全文
posted @ 2019-07-12 19:54 知道了呀~ 阅读(1006) 评论(0) 推荐(0) 编辑
摘要:全文检索 Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 2553 Accepted Submission(s): 853 Problem Des 阅读全文
posted @ 2019-07-12 17:13 知道了呀~ 阅读(304) 评论(0) 推荐(0) 编辑
摘要:Phone List Time Limit: 3000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 27948 Accepted Submission(s): 9204 Pro 阅读全文
posted @ 2019-07-12 10:26 知道了呀~ 阅读(540) 评论(0) 推荐(0) 编辑
摘要:What Are You Talking About Time Limit: 10000/5000 MS (Java/Others) Memory Limit: 102400/204800 K (Java/Others)Total Submission(s): 31176 Accepted Subm 阅读全文
posted @ 2019-07-11 22:04 知道了呀~ 阅读(480) 评论(0) 推荐(0) 编辑
摘要:当需要的信息要经过两个链接才能打开的时候,就需要用到嵌套爬取。 比如要爬取起点中文网排行榜的小说简介,找到榜单网址:https://www.qidian.com/all?orderId=&style=1&pageSize=20&siteid=1&pubflag=0&hiddenField=0&pag 阅读全文
posted @ 2019-07-11 19:14 知道了呀~ 阅读(2120) 评论(0) 推荐(0) 编辑
摘要:从网页爬取文本信息: eg:从http://computer.swu.edu.cn/s/computer/kxyj2xsky/中爬取讲座信息(讲座时间和讲座名称) 注:如果要爬取的内容是多页的话,网址一定要从第二页开始,因为有的首页和其他页的网址有些区别 代码 import pymysql impo 阅读全文
posted @ 2019-07-07 11:13 知道了呀~ 阅读(7294) 评论(1) 推荐(0) 编辑
摘要:首先要连接自己的数据库 import pymysql import requests #需要导入模块 db = pymysql.connect('localhost', 'root', '*********', 'mysql')#第三个是数据库密码,第四个是数据库名称 print("数据库连接成功! 阅读全文
posted @ 2019-07-06 22:25 知道了呀~ 阅读(3094) 评论(0) 推荐(0) 编辑
摘要:Immediate Decodability Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 5334 Accepted Submission(s 阅读全文
posted @ 2019-07-05 19:22 知道了呀~ 阅读(301) 评论(0) 推荐(0) 编辑
摘要:Hat’s Words Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 20441 Accepted Submission(s): 7162 Pr 阅读全文
posted @ 2019-07-05 16:07 知道了呀~ 阅读(234) 评论(0) 推荐(0) 编辑
摘要:统计难题 Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 131070/65535 K (Java/Others)Total Submission(s): 65094 Accepted Submission(s): 22446 Problem 阅读全文
posted @ 2019-07-04 17:18 知道了呀~ 阅读(500) 评论(0) 推荐(0) 编辑

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