对于一个定长(size = n)的数列a, 若其存在“位置相关”的子集(含空集)使得该子集所有元素之和为k,那么将数列a计数。其中数列a中任一元素a[i]在[0, l]内自由取值。数据条件0≤n, k ≤ 20, 0≤ l ≤ 1e9,计数结果对mod = 1e9 + 7取模。无论直接计数还是考虑从...
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移动开发 时间:
2015-10-18 19:58:45
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使用函数的目的: 省去重复代码的编写,可以在多个地方调用,使得程序模块化主要分三步: 声明函数原型 使用函数 定义函数 1 #include 2 #include 3 #define NAME "heipi" 4 #define ADDRESS "wu han university of techo...
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其他好文 时间:
2015-10-16 11:20:37
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Today, Infusion held a talk in Columbia University about tech interview.Talker: Nishit Shah @ Infusion, Techinical Account Manager, Dev -> Team Lead -...
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其他好文 时间:
2015-10-10 06:48:05
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Today, TripAdvisor held a tech talk in Columbia University. The topic is about k-d Tree implemented in TripAdvisor to efficiently search MASSIVE locat...
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2015-10-10 06:47:47
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H -May Day HolidayDescriptionAs a university advocating self-learning and work-rest balance, Marjar University has so many days...
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其他好文 时间:
2015-10-10 00:25:24
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Average ScoreTime Limit: 2 Seconds Memory Limit: 65536 KBBob is a freshman in Marjar University. He is clever and diligent. However, he is not good a....
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2015-10-08 20:02:05
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什么是Lua Lua 是一个小巧的脚本语言。是巴西里约热内卢天主教大学(Pontifical Catholic University of Rio de Janeiro)里的一个研究小组,由Roberto Ierusalimschy、Waldemar Celes 和 Luiz Henrique d....
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其他好文 时间:
2015-10-06 16:52:02
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Today, Yelp held a tech talk in Columbia University about the data warehouse adopted by Yelp.Yelp used Amazon Redshift as data warehouse.There are sev...
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其他好文 时间:
2015-10-06 09:11:09
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Average ScoreTime Limit:2 Seconds Memory Limit:131072 KBBob is a freshman in Marjar University. He is clever and diligent. However, he is not good at ...
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其他好文 时间:
2015-10-05 20:39:41
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Ilya got tired of sports programming, left university and got a job in the subway. He was given the task to determine the escalator load factor.Let's ...
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其他好文 时间:
2015-10-03 16:48:47
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