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P2986 [USACO10MAR]伟大的奶牛聚集Great Cow Gat…
题目描述 Bessie is planning the annual Great Cow Gathering for cows all across the country and, of course, she would like to choose the most convenient lo ...
分类:其他好文   时间:2018-07-21 22:46:40    阅读次数:194
CF 1005B Delete from the Left 【模拟数组操作/正难则反】
You are given two strings s and t. In a single move, you can choose any of two strings and delete the first (that is, the leftmost) character. After a ...
分类:编程语言   时间:2018-07-21 22:46:26    阅读次数:282
Consecutive Subsequence (DP+map)
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 in ...
分类:其他好文   时间:2018-07-16 21:12:15    阅读次数:293
N - Binomial Showdown (组合数学)
Description In how many ways can you choose k elements out of n elements, not taking order into account? Write a program to compute this number. Input ...
分类:其他好文   时间:2018-07-16 11:22:21    阅读次数:206
Luogu P1313 计算系数
思路 在数据范围中已经给出了提示。即保证$N+M = K$ 第一眼就知道要用二项式定理啊 二项式定理 先普及一下二项式定理,其实就是$(x+y)^n$的展开式,形式如下: $$\large{(x+y)^n = {0\choose n}\times x^n+{{1}\choose {n-1}}\tim ...
分类:其他好文   时间:2018-07-15 21:15:47    阅读次数:131
BAPC 2014 Preliminary
A. Choosing Ice Cream You are standing in the supermarket in front of the freezers. You have a very tough task ahead of you: you have to choose what t ...
分类:其他好文   时间:2018-07-11 15:07:26    阅读次数:143
Oracle_高级功能(9) 性能优化
1.oracle优化器 优化目标分为4种: choose (选择性) rule (基于规则) first rows(第一行) all rows(所有行) Description:描述sql的执行计划 Object owner:对象模式 Object name:对象名 Cost:花费(的时间) Car ...
分类:数据库   时间:2018-07-08 15:36:42    阅读次数:222
ACM-ICPC Asia Training League 暑假第一阶段第一场 ABF
A Choosing Ice Cream You are standing in the supermarket in front of the freezers. You have a very tough task ahead of you: you have to choose what ty ...
分类:其他好文   时间:2018-07-08 14:43:21    阅读次数:213
Oracle_高级功能(2) 索引
1.oracle优化器 优化目标分为4种: choose (选择性) rule (基于规则) first rows(第一行) all rows(所有行) Description:描述sql的执行计划 Object owner:对象模式 Object name:对象名 Cost:花费(的时间) Car ...
分类:数据库   时间:2018-07-08 13:33:07    阅读次数:200
Choose unique values for the 'webAppRootKey' context-param in your web.xml files! 错误的解决
大意是Log4jConfigListener在获取webapp.root值时,被后一context的值替换掉了,所以要在各个项目的web.xml中配置不同的webAppRootKey值,随即在其中一个web.xml中添加: 重启tomcat,问题解决。 参考: https://blog.csdn.n ...
分类:移动开发   时间:2018-07-03 16:57:05    阅读次数:267
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