http://noi.openjudge.cn/ch0207/4976/ 描述 宇航员Bob有一天来到火星上,他有收集硬币的习惯。于是他将火星上所有面值的硬币都收集起来了,一共有n种,每种只有一个:面值分别为a1,a2… an。 Bob在机场看到了一个特别喜欢的礼物,想买来送给朋友Alice,这个礼 ...
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其他好文 时间:
2017-10-02 11:50:21
阅读次数:
201
[Spark][python]以DataFrame方式打开Json文件的例子: [training@localhost ~]$ cat people.json{"name":"Alice","pcode":"94304"}{"name":"Brayden","age":30,"pcode":"943 ...
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编程语言 时间:
2017-10-01 21:14:36
阅读次数:
471
# The get() method on dicts # and its "default" argument name_for_userid = { 382: "Alice", 590: "Bob", 951: "Dilbert", } def greeting(userid): return ... ...
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编程语言 时间:
2017-10-01 19:02:43
阅读次数:
181
Spark(Python) 从内存中建立 RDD 的例子: myData = ["Alice","Carlos","Frank","Barbara"]myRdd = sc.parallelize(myData)myRdd.take(2) In [52]: myData = ["Alice","Car ...
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编程语言 时间:
2017-09-24 18:18:34
阅读次数:
514
Now there are nn gems, each of which has its own value. Alice and Bob play a game with these nn gems. They place the gems in a row and decide to take ...
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其他好文 时间:
2017-09-24 16:22:48
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135
题目描述 Alice and Bob learned the minima game, which they like very much, recently. The rules of the game are as follows. A certain number of cards lies ...
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其他好文 时间:
2017-09-24 09:55:39
阅读次数:
220
题目大意: Alice和Bob两个人正在玩一个游戏,游戏有很多种任务,难度为p的任务(p是正整数),有1/(2^p)的概率完成并得到2^(p-1)分,如果完成不了,得0分。一开始每人都是0分,从Alice开始轮流做任务,她可以选择任意一个任务来做;而Bob只会做难度为1的任务。只要其中有一个人达到n ...
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其他好文 时间:
2017-09-22 19:13:15
阅读次数:
154
P3507 [POI2010]GRA-The Minima Game P3507 [POI2010]GRA-The Minima Game P3507 [POI2010]GRA-The Minima Game 题目描述 Alice and Bob learned the minima game, w ...
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其他好文 时间:
2017-09-20 19:23:17
阅读次数:
121
#和Alice有个约会,一大早Bob就从点(0,0)出发,前往约会地点(a,b)。Bob没有一点方向感,因此他每次都随机的向上下左右四个方向走一步。简而言之,如果Bob当前在(x,y),那么下一步他有可能到达(x+1,y),(x-1,y),(x,y+1),(x,y-1)。很显然,当他到达目的地的时候 ...
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其他好文 时间:
2017-09-17 18:46:47
阅读次数:
135
Alice is so popular that she can receive many flowers everyday. She has N vases numbered from 0 to N-1. When she receive some flowers, she will try to ...
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其他好文 时间:
2017-09-17 17:26:37
阅读次数:
147