https://www.hackerrank.com/contests/w1/challenges/volleyball-match 此题不错,首先可以看出是DP,S(x, y)= S(x - 1, y) + S(x, y - 1).然后比赛结束状态需要认真判断.三来,最后数据量很大(接近10^9)远超一般DP的数据量,分配数组都不行,里面是有规律的.下面是大数据失败的代码: #include <vector> #include <iostream> #include <cs…

题意翻译 给出一个图,双向边,边上有权值代表路的距离,然后每个点上有两个值,t,c,t代表能从这个点最远沿边走t,且不能在半路下来,花费是c 现在告诉你起点终点,问最少的花费 点个数1000,边个数1000,边权1e9 By @partychicken 题目描述 Petya loves volleyball very much. One day he was running late for a volleyball match. Petya hasn't bought his own car…

Petya loves volleyball very much. One day he was running late for a volleyball match. Petya hasn't bought his own car yet, that's why he had to take a taxi. The city has n junctions, some of which are connected by two-way roads. The length of each ro…

题目链接:http://codeforces.com/problemset/problem/95/C C. Volleyball time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Petya loves volleyball very much. One day he was running late for a volleyb…

RESEARCH TRACK PAPERS - ORAL Title & Authors NetCycle: Collective Evolution Inference in Heterogeneous Information NetworksAuthor(s): Yizhou Zhang*, Fudan University; Xiong Yun, ; Xiangnan Kong, Worcester Polytechnic Institute; Yangyong Zhu, Fudan Un…

Elasticsearch 5.0 关于term query和match query的认识 一.基本情况 前言:term query和match query牵扯的东西比较多,例如分词器.mapping.倒排索引等.我结合官方文档中的一个实例,谈谈自己对此处的理解 string类型在es5.*分为text和keyword.text是要被分词的,整个字符串根据一定规则分解成一个个小写的term,keyword类似es2.3中not_analyzed的情况. string数据put到elasticse…

前言 之前系列中在查询计划中一直出现Stream Aggregate,当时也只是做了基本了解,对于查询计划中出现的操作,我们都需要去详细研究下,只有这样才能对查询计划执行的每一步操作都了如指掌,所以才有了本文的出现,简短的内容,深入的理解,Always to review the basics. Stream Aggregate Stream Aggregate通过单列或者多列来对行进行分组并且对指定的查询来计算聚合表达式.最常见的聚合类型如SUM.COUNT.SUM.AVG.MIN.MAX,当…

从别的地方导入一个项目的时候,经常会遇到eclipse/Myeclipse报Description  Resource Path Location Type Java compiler level does not match the version of the installed Java project facet.出现这个问题的原因是因为,eclipse/myeclipse的jdk编译版本与出现问题的项目JDK编译版本不一致所导致! 1.先设置好jdk,需要确定 项目,eclipse/m…

今天研究钉钉的开放平台,结果一个demo整了半天,这帮助系统写的也很难懂.遇到两个问题: 1.首先是执行demo时报unable to find valid certification path to requested target,错误信息如下: request url=https://oapi.dingtalk.com/gettoken?corpid=...略...&corpsecret=...略..., exception, msg=sun.security.validator.Vali…

正则表达式的本质是使用一系列特殊字符模式,来表示某一类字符串.正则表达式无疑是处理文本最有力的工具,而.NET的System.dll类库提供的System.Text.RegularExpressions.Regex类实现了验证正则表达式的方法.Regex 类表示不可变(只读)的正则表达式.它还包含各种静态方法,允许在不显式创建其他类的实例的情况下使用其他正则表达式类. 正则表达式的字符代表的说明: Normal 0 7.8 磅 0 2 false false false EN-US ZH-CN…