Shuffling is a procedure used to randomize a deck of playing cards. Because standard shuffling techniques are seen as weak, and in order to avoid "ins ...
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系统相关 时间:
2020-05-12 00:02:51
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94
A common pastime for poker players at a poker table is to shuffle stacks of chips. Shuffling chips is performed by starting with two stacks of poker c ...
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其他好文 时间:
2020-03-25 01:13:56
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53
1. 题目 2. 思路 常规题目 3. 注意点 无 4. 代码 ...
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系统相关 时间:
2020-03-04 21:03:35
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54
题意简述: 有一堆标号为$1,\cdots,n$的牌,初始有序。 现在我们进行$m$次如下的操作:在$n$张牌中任选一张抽出然后放回堆顶。 求最后牌堆依旧有序的概率,答案对$1000000007$取模。 数据范围: $n\le5 10^6$ 解法: 首先总方案数数是$n^m$。 我们考虑一下合法抽牌 ...
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其他好文 时间:
2020-02-07 17:06:20
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82
题目描述 Shuffling is a procedure used to randomize da deck of playing cards. Because standard shuffling techniques are seen as weak, and in order to avoi ...
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系统相关 时间:
2020-01-01 12:04:39
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115
389. Find the Difference Easy Easy Easy Given two strings s and t which consist of only lowercase letters. String t is generated by random shuffling s ...
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其他好文 时间:
2019-11-18 09:22:52
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65
题意: 输入洗牌次数K(<=20),输入54张牌每次洗入的位置(不是交换的位置),输出洗好的牌。 代码: #define HAVE_STRUCT_TIMESPEC#include<bits/stdc++.h>using namespace std;multiset<int>st;int a[57]; ...
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系统相关 时间:
2019-09-26 10:06:36
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106
Shuffling is a procedure used to randomize a deck of playing cards. Because standard shuffling techniques are seen as weak, and in order to avoid "ins ...
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系统相关 时间:
2019-07-28 15:50:44
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119
Partitioner: Partitioning and Combining take place between Map and Reduce phases. It is to club the data which should go to the same reducer based on ...
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其他好文 时间:
2019-06-09 12:47:01
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97
"传送门" 其实有一个显然的性质嘛:对于每个数,其实只要考虑它最右能被换到的位置就好了 然后设$f[i][j]$表示已经处理完了前$i 1$位,当前还有$j$个$1$可以自由支配(注意这里说的是当前可以自由支配,不是总共可以自由支配的$1$) 代码: c++ include include incl ...
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其他好文 时间:
2019-04-22 12:06:27
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145