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hdu 4639 Hehe
大意:给你一个字符串,字符串中的hehe可以换成wqnmlgb,问有几种换发?思路:1、由分析不难得出连续的he出现的时候f[n]=f[n-1]+f[n-2]。2、扫描字符串,利用上面算出的f[n]对字符串中出现的hehe进行计算即可3、各个不连续的hehe串的f[]乘起来就得到了。代码:#incl...
分类:其他好文   时间:2014-08-04 13:27:47    阅读次数:232
ZCA白化变换推导——Learning Multiple Layers of Features from Tiny Images
参考文献:Learning Multiple Layers of Features from Tiny Images:附录 设数据集 X 的维数为 d×n ,且已经中心化 则协方差矩阵为 1/(n-1)*X*X' 我们想让这n个d维向量中任意两维都不相关,则假定去相关矩阵为W Y = W*X 为了使W达到去相关的目的,Y*Y‘必须是对角阵,可以进一步约束Y满足 Y * Y’ = (n...
分类:其他好文   时间:2014-08-04 11:06:27    阅读次数:403
zoj 1649 Rescue
Rescue Time Limit: 2 Seconds      Memory Limit: 65536 KB Angel was caught by the MOLIGPY! He was put in prison by Moligpy. The prison is described as a N * M (N, M Angel's friends want to s...
分类:其他好文   时间:2014-08-04 10:59:57    阅读次数:237
Lesson 39-40 Do you like your job?
一 Words 1 ought to 应该v 2 occupation 职业n,占用v eg. He is a teacher by occupation but a philosopher by inclination倾向,爱好.他的职业是教师,但他的本心是成为哲学家。 3 job satisfa...
分类:其他好文   时间:2014-08-04 08:17:06    阅读次数:324
The area 积分积分
The areaTime Limit:1000MSMemory Limit:32768KB64bit IO Format:%I64d & %I64uSubmitStatusDescriptionIgnatius bought a land last week, but he didn't know ...
分类:其他好文   时间:2014-08-04 01:46:56    阅读次数:231
【HackerRank】Sherlock and MiniMax
题目连接:Sherlock and MiniMaxWatson gives Sherlock an arrayA1,A2...AN.He asks him to find an integerMbetweenPandQ(both inclusive), such that,min {|Ai-M|, ...
分类:其他好文   时间:2014-08-03 23:04:06    阅读次数:380
POJ - 3225 Help with Intervals (开闭区间)
Description LogLoader, Inc. is a company specialized in providing products for analyzing logs. While Ikki is working on graduation design, he is also engaged in an internship at LogLoader. Among ...
分类:其他好文   时间:2014-08-03 20:37:35    阅读次数:275
poj 3723 Conscription(最小生成树拓展)
Conscription Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 7702   Accepted: 2667 Description Windy has a country, and he wants to build an army to protect ...
分类:其他好文   时间:2014-08-03 18:10:35    阅读次数:354
uva 11256 - Repetitive Multiple(gcd+暴力)
题目链接:uva 11256 - Repetitive Multiple 题目大意:给定一个数n,要求找到最小的k,使得k?n为题目中定义的重复数字. 解题思路:枚举k?n的循环节长度,比如当前枚举为2,那么一次判断u=1001,1001001,1001001001 ...,取d = gcd(n,u), 那么k = u / d, a = n / d (因为n?k=u?a)并且保...
分类:其他好文   时间:2014-08-03 12:54:35    阅读次数:211
HDU-2128-Tempter of the Bone II(BFS)
Problem Description The doggie found a bone in an ancient maze, which fascinated him a lot. However, when he picked it up, the maze was changed and the way he came in was lost.He realized that the bo...
分类:其他好文   时间:2014-08-02 23:31:54    阅读次数:274
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