C. Friends and Gifts time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output There are nn friend ...
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其他好文 时间:
2020-11-01 10:31:24
阅读次数:
17
给出一个序列,m个查询,每次查询区间是否是$[1, r - l + 1]$的排列 判断是否是排列: 即每个数字只出现一次 区间和是$\frac{n * (n + 1)}{2}$,n是区间长度。 判断每个数字是否只出现一次,可以预处理每个数之和第一次出现这个数字的位置,如果没有那么设置为0,然后用线段 ...
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其他好文 时间:
2020-09-18 00:02:53
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30
一、Reading My girlfriend and I are going to get married this year. We are going to have a big wedding party. All our friends and relatives are going to ...
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其他好文 时间:
2020-07-29 10:36:23
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74
由于配置是运行过那么长时间,很稳定,基本上不考虑,所以本次主要是sql的优化,并且集中在业务的个人空间。下面是这次优化的数据库版本: 案例一:粉丝查询优化 粉丝查询有2条sql --查询所有粉丝SELECT user FROM osc_friends f INNER JOIN osc_users u ...
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数据库 时间:
2020-07-23 23:07:42
阅读次数:
101
##题目 Pasha loves to send strictly positive integers to his friends. Pasha cares about security, therefore when he wants to send an integer n, he encry ...
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其他好文 时间:
2020-07-19 23:37:51
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80
一、Reading Jack seldom gets together with his friends. He usually stays at home with his pet dog, Lucky. They sometimes go for long walks in the park. ...
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其他好文 时间:
2020-07-17 14:08:23
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76
参数: -i: 不区分大小写 -c: 统计包含匹配的行数 -n: 输出行号 -v: 反向匹配 示例文件: (example.txt) The cat's name is Tom, what's the mouse's name? The mouse's NAME is Jerry They are ...
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系统相关 时间:
2020-07-07 20:11:38
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71
Lost and AekdyCoin are friends. They always play "number game"(A boring game based on number theory) together. We all know that AekdyCoin is the man c ...
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编程语言 时间:
2020-07-07 12:52:15
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93
Object.create()方法是ECMAScript5中新增的,用来规范化原型式继承的。这个方法接收两个参数,一个是用作新对象原型的对象,和一个为新对象定义额外属性的(可选)对象。 var person = { name: "Nicholas", friends: ["John", "Jane" ...
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其他好文 时间:
2020-07-05 15:49:26
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90
Welcome!!! to my presentation !, About friendship, and growth. When i was little(靠过来正式), i used to make many friends. no matter who they are!, we can ...
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其他好文 时间:
2020-06-29 00:51:57
阅读次数:
104