安全性要求高的应用程序必须避免使用不安全的或者强度弱的加密算法,现代计算机的计算能力使得攻击者通过暴力破解能够攻破强度弱的算法。比如,数据加密标准算法DES是极度不安全的,使用类似EFF(Electronic Frontier Foundaton) Deep Crack的计算机在一天内能够暴力破.....
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编程语言 时间:
2015-01-31 19:17:59
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239
A linked list is given such that each node contains an additional random pointer which could point to any node in the list or null.Return a deep copy ...
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其他好文 时间:
2015-01-30 06:40:19
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186
#include #include #include #include using namespace std;__int64 flag;int num[] = {50, 25, 10, 5, 1};void dfs(int n, int deep, int last, int coin){ if(...
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其他好文 时间:
2015-01-29 14:17:12
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183
Deep in the Amazon jungle, exceptionally tall trees grow that support a rich biosphere of figs and juniper bugs, which happen to be the culinary delight of brown monkeys.
Reaching the canopy of these trees requires the monkeys to perform careful navigati...
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其他好文 时间:
2015-01-29 09:35:41
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209
Problem Description
An inch worm is at the bottom of a well n inches deep. It has enough energy to climb u inches every minute, but then has to rest a minute before climbing again. During the rest, i...
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其他好文 时间:
2015-01-28 09:52:39
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114
DescriptionAn inch worm is at the bottom of a well n inches deep. It has enough energy to climb u inches every minute, but then has to rest a minute b...
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其他好文 时间:
2015-01-27 13:05:04
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150
题意:
给定n deep
1、构造一个n个节点的带权树,且最大深度为deep,每个节点最多只能有2个儿子
2、每个节点的值为2^0, 2^1 ··· 2^(n-1) 任意两个节点值不能相同
3、对于一个节点,若他有左右儿子,则左子树的和
思路:设dp[ i ] [ j ]为结点数为i,深度不超过 j 的满足条件的树的个数。首先考虑invlid情况,即:
dp[ i ] [ j ] ...
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其他好文 时间:
2015-01-26 17:13:54
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156
Deep Learning(深度学习)学习笔记整理系列zouxy09@qq.comhttp://blog.csdn.net/zouxy09作者:Zouxyversion 1.0 2013-04-08声明:1)该Deep Learning的学习系列是整理自网上非常大牛和机器学习专家所无私奉献的资料的。...
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其他好文 时间:
2015-01-24 17:18:05
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291
A linked list is given such that each node contains an additional random pointer which could point to any node in the list or null.Return a deep copy ...
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其他好文 时间:
2015-01-24 17:10:49
阅读次数:
237