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原创 hrbustOJ 1787 New Fibonacci Number (矩阵快速幂+欧拉公式降幂)
New Fibonacci NumberTime Limit: 1000 MSMemory Limit: 32768 KTotal Submit: 40(18 users)Total Accepted: 14(11 users)Rating: Special Judge: NoDescription
2016-05-07 14:39:40
334
原创 ZOJ 3941 Kpop Music Party (有了思路就很好做)
Kpop Music PartyTime Limit: 2 Seconds Memory Limit: 65536 KB Marjar University often hosts Kpop music festival. A Kpop music festival will last several days. During a Kpop festival, the
2016-05-05 16:18:55
519
原创 hrbustOJ 1042 过河卒 (dp 搜索应该也可以写)
过河卒Time Limit: 5000 MSMemory Limit: 65536 KTotal Submit: 152(35 users)Total Accepted: 33(21 users)Rating: Special Judge: NoDescriptionLda学会了中国
2016-05-05 16:10:06
373
原创 CodeForces 16D Logging
Hierarchytime limit per test2 secondsmemory limit per test64 megabytesinputstandard inputoutputstandard outputNick's company employed n people. Now Nick needs t
2016-03-31 20:16:58
307
原创 CodeForces 17B Hierarchy
Hierarchytime limit per test2 secondsmemory limit per test64 megabytesinputstandard inputoutputstandard outputNick's company employed n people. Now Nick needs t
2016-03-31 20:12:36
597
原创 CodeForces 25C Roads in Berland
Roads in Berlandtime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputThere are n cities numbered from 1 to n in
2016-03-31 20:08:32
334
原创 CodeForces 25D Roads not only in Berland (并查集)
Roads not only in Berlandtime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputBerland Government decided to imp
2016-03-31 20:05:19
269
原创 CodeForces 25D Roads not only in Berland (bingchaji
Roads not only in Berlandtime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputBerland Government decided to imp
2016-03-31 20:02:05
84
原创 CodeForces 639B Bear and Forgotten Tree 3(水题)
time limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputA tree is a connected undirected graph consisting of n vertices
2016-03-31 19:26:43
790
原创 CodeForces 18B Platforms (水题)
DescriptionIn one one-dimensional world there are n platforms. Platform with index k (platforms are numbered from 1) is a segment with coordinates [(k - 1)m, (k - 1)m + l], and l m. Grasshopper Bob st
2016-03-31 19:17:26
392
原创 CodeForces 18A Triangle (几何)
DescriptionAt a geometry lesson Bob learnt that a triangle is called right-angled if it is nondegenerate and one of its angles is right. Bob decided to draw such a triangle immediately: on a sheet
2016-03-31 19:14:28
436
原创 FZU 2095 水面高度 (数学题)
Descriptionkk手上有个长方体,三边长AC,AB,AD分别为a,b,c,现在里面的水高度为d(0Input第一行一个整数T,表示有T(1每组数据输入五个整数:a b c d x (10Output每组数据输出一行,表示水面高度,结果保留两位小数。Sample Input215 10 20
2016-03-16 10:05:25
217
原创 FZU 2098 刻苦的小芳 (DP)
Description小芳是一个努力用功的好孩子。快高考了,她正在努力备战中。她要完成n份作业,然后把完成的作业堆成老高的一堆。为了保证学习的效率,她总是在一份作业写完后还会回过头去复习一下。因此她总是在写完几份作业就从已写完的作业堆中从上到下拿几本来复习,要知道如果不这么做的话把作业弄乱就麻烦了。另外,她还发现,如果她的书叠得太高了就会因为重心不稳而倒下,所以她必须保证她叠的书不能超过k
2016-03-16 10:02:09
300
原创 FZU 2107 Hua Rong Dao (DFS)
DescriptionCao Cao was hunted down by thousands of enemy soldiers when he escaped from Hua Rong Dao. Assuming Hua Rong Dao is a narrow aisle (one N*4 rectangle), while Cao Cao can be regarded as one 2
2016-03-15 12:48:24
247
原创 UESTC 482 Charitable Exchange (线段树)
DescriptionHave you ever heard a star charity show called Charitable Exchange? In this show, a famous star starts with a small item which values 11yuan. Then, through the efforts of repeatedly e
2016-03-15 10:51:51
490
原创 ZOJ 3331-Process the Tasks (DP)
DescriptionThere are two machines A and B. There are n tasks, namely task 1, task 2, ..., task n. You must assign each task to one machine to process it. There are some facts you must know and com
2016-03-09 10:44:56
355
原创 HUST1605 - Gene recombination (BFS)
题意:有两个长度为N(N1、将字符串的第一位变成最后一位2、交换字符串前两位求将第一个字符串变为第二个字符串的最小次数 这是一个简单的BFS,ACGT表示成0123,这样有4^12种状态,BFS一下可得用bool比用map会快一些#include#include#include#includestring.h>#includeusing na
2016-03-09 10:44:52
259
原创 Codeforces 611D New Year and Ancient Prophecy DP
题意:把一个字符串分割成多个小串,小串组成严格递增序列,n 这是一个DP。s代表原串dp[i][j]代表当前到i位置最后一个串是以j为开头的方案数。答案就是dp[n][1]+...+dp[n][n]很容易得到dp[i][j]=dp[j-1][k]+dp[j-1][k+1]……dp[j-1][j-1] (i-j=j-k) 如果s[k-1....j-1] >=s[j...
2016-03-09 10:44:47
241
原创 HDU计算机学院大学生程序设计竞赛(2015’12)1005 Bitwise Equations
题意:已知x,k求第k个使得x+y==x|y的正整数y x+y==x|y即x为1的位y为0可知y有几位可以为1详见代码#include#include#includestring>#include#include#includeusing namespace std;const int N=50005;int n,k;int se
2016-03-09 10:44:43
200
原创 HDU计算机学院大学生程序设计竞赛(2015’12)1007 Pick Game
题意:有n*m的格子 v[i][j]代表该位置的价值 (n,m两个人轮流选格子 只有相邻格子至少有两个为空的才能选选择之后该格子变空,得到v[i][j]求问先手能达到的最大价值 爆搜可过,状态不多。记忆化搜索用map记录4000ms过 无剪枝还可以加一些剪枝#include#include#include#include#include
2016-03-09 10:44:38
203
原创 HDU计算机学院大学生程序设计竞赛(2015’12)1008 Study Words
题意:输入一篇文章,输出出现最多的10个单词不包括old里的已有单词出现次数相同按字典序大小 简单模拟,map记录个数没有什么坑点然后sort一下用string 可以直接比较字典序大小#include#include#includestring>#include#include#include#includeusing names
2016-03-09 10:44:35
216
原创 HDU计算机学院大学生程序设计竞赛(2015’12)1006 01 Matrix
题意:有一个n*n(nQ次询问(1000) 每次询问有几个大于等于k的全为一的子矩形 从右下角往右上角预处理每个点有一个r x vr代表右边有多少连续1x代表下面有多少连续1v代表以这个为左上角的矩阵最大是多少所以v[i][j]= min(r[i][j+1], x[i+1][j],v[i+1][j+1]) +1r[i][j]=r[i][j+1]+1;x[i][j]=x[i+
2016-03-09 10:44:33
209
原创 HDU 4930 Fighting the Landlords 多校第六场
两个人打牌,只要A可以打出一手牌B接不上,Yes 否则No。如果A可以zhi
2014-08-08 13:42:29
350
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