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HDU 5194 DZY Loves Balls(概率)
Problem Description: There are n black balls and m white balls in the big box. Now, DZY starts to randomly pick out the balls one by one. It forms a sequence S. If at the i-th operation,...
分类:其他好文   时间:2015-04-16 09:09:31    阅读次数:174
Codeforces Round #262 (Div. 2) E. Roland and Rose 暴力
E. Roland and RoseTime Limit: 1 SecMemory Limit: 256 MB题目连接http://codeforces.com/problemset/problem/460/EDescriptionRoland loves growing flowers. He h...
分类:其他好文   时间:2015-04-15 00:58:03    阅读次数:207
D. Little Girl and Maximum XOR(贪心)
D. Little Girl and Maximum XOR A little girl loves problems on bitwise operations very much. Here's one of them. You are given two integers l and r. Let's consider the values of for all pa...
分类:其他好文   时间:2015-04-10 09:40:40    阅读次数:147
Codeforces Round #177 (Div. 2)---D. Polo the Penguin and Houses (组合数学+暴力)
Little penguin Polo loves his home village. The village has n houses, indexed by integers from 1 to n. Each house has a plaque containing an integer, the i-th house has a plaque containing integer pi (...
分类:其他好文   时间:2015-04-09 09:04:20    阅读次数:177
Codeforces Round #FF (Div. 2) E. DZY Loves Fibonacci Numbers(斐波那契的定理+线段树)
/*   充分利用了菲波那切数列的两条定理:    ①定义F[1] = a, F[2] = b, F[n] = F[n - 1] + F[n - 2](n≥3)。         有F[n] = b * fib[n - 1] + a * fib[n - 2](n≥3),其中fib[i]为斐波那契数列的第 i 项。    ②定义F[1] = a, F[2] = b, F[n] = F[n -...
分类:其他好文   时间:2015-04-08 18:12:38    阅读次数:116
BC DZY Loves Topological Sorting
DZY Loves Topological Sorting    Accepts: 112    Submissions: 586  Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others) 问题描述 一张有向图的拓扑序列是图中点的一个排列,满足对于图...
分类:其他好文   时间:2015-04-06 08:54:50    阅读次数:202
ZeptoLab Code Rush 2015---C. Om Nom and Candies
A sweet little monster Om Nom loves candies very much. One day he found himself in a rather tricky situation that required him to think a bit in order to enjoy candies the most. Would you succeed with...
分类:其他好文   时间:2015-04-05 14:40:31    阅读次数:171
hdu.5195.DZY Loves Topological Sorting(topo排序 && 贪心)
DZY Loves Topological SortingTime Limit: 4000/2000 MS (Java/Others)Memory Limit: 131072/131072 K (Java/Others) Total Submission(s): 866Accepted Submis...
分类:编程语言   时间:2015-04-05 14:32:48    阅读次数:174
卡片厂商代码
卡片厂商      标识 -------------------------- 中钞信用卡      ZCC 东信和平       EP 楚天龙        CTDSI 湖北黄石捷德万达   HW 广东珠海金邦达    GSC 湖北武汉天喻    WHTY 易联众       YLZ 江苏丹阳恒宝股份   HB 天津磁卡       GSCC 山东青岛融佳  ...
分类:其他好文   时间:2015-04-05 12:02:43    阅读次数:120
Codeforces Round #172 (Div. 2)---D. Maximum Xor Secondary(RMQ + 二分)
Bike loves looking for the second maximum element in the sequence. The second maximum element in the sequence of distinct numbers x1,?x2,?…,?xk (k?>?1) is such maximum element xj, that the following in...
分类:其他好文   时间:2015-04-03 15:21:56    阅读次数:154
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