刚刚开始用Java,代码难免不够简洁. import java.math.BigDecimal; import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner cin = new Scanner(System.in); while (cin.hasNext()) { BigDecimal a = cin.nextBigDecimal(); BigDecimal b =…

一.需求:计算网页访问量前三名 import org.apache.spark.rdd.RDD import org.apache.spark.{SparkConf, SparkContext} /** * 需求:计算网页访问量前三名 * 用户:喜欢视频 直播 * 帮助企业做经营和决策 * * 看数据 */ object UrlCount { def main(args: Array[String]): Unit = { //1.加载数据 val conf:SparkConf = new Spa…

Problem Description 人随着岁数的增长是越大越聪明还是越大越笨,这是一个值得全世界科学家思考的问题,同样的问题Eddy也一直在思考,因为他在很小的时候就知道亲和串如何判断了,但是发现,现在长大了却不知道怎么去判断亲和串了,于是他只好又再一次来请教聪明且乐于助人的你来解决这个问题. 亲和串的定义是这样的:给定两个字符串s1和s2,如果能通过s1循环移位,使s2包含在s1中,那么我们就说s2 是s1的亲和串. Input 本题有多组测试数据,每组数据的第一行包含输入字符串s1,第二…

Problem Description As the increase of population, the living space for people is becoming smaller and smaller. In MagicStar the problem is much worse. Dr. Mathematica is trying to save land by clustering buildings and then we call the set of buildin…

Problem Description Today is Saturday, 17th Nov,2007. Now, if i tell you a date, can you tell me what day it is ? Input There are multiply cases. One line is one case. There are three integers, year(0< year<10000), month(0<=month<13), day(0<…

大明A+B Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 9273    Accepted Submission(s): 3318 Problem Description 话说,经过了漫长的一个多月,小明已经成长了许多,所以他改了一个名字叫“大明”.这时他已经不是那个只会做100以内加法的那个“小明”了,现在他甚至会任意长度的正小数的加…

A + B Problem II Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 241933    Accepted Submission(s): 46646 Problem Description I have a very simple problem for you. Given two integers A and B, you…

FatMouse' Trade Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 56784    Accepted Submission(s): 19009 Problem Description FatMouse prepared M pounds of cat food, ready to trade with the cats g…

Nasty Hacks Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 3049    Accepted Submission(s): 2364 Problem Description You are the CEO of Nasty Hacks Inc., a company that creates small pieces of…

Box of Bricks Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 5994    Accepted Submission(s): 2599 Problem Description Little Bob likes playing with his box of bricks. He puts the bricks one up…

Fibonacci again and again Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3610    Accepted Submission(s): 1491 Problem Description 任何一个大学生对菲波那契数列(Fibonacci numbers)应该都不会陌生,它是这样定义的:F(1)=1;F(2)=2;…

DP/四边形不等式 做过POJ 1739 邮局那道题后就很容易写出动规方程: dp[i][j]=min{dp[i-1][k]+w[k+1][j]}(表示前 j 个点分成 i 块的最小代价) $w(l,r)=\sum_{i=l}^{r}\sum_{j=i+1}^{r}a[i]*a[j]$ 那么就有 $w(l,r+1)=w(l,r)+a[j]*\sum\limits_{i=l}^{r}a[i]$ 所以:w[i][j]明显满足 关于区间包含的单调性 然后我们大胆猜想,小(bu)心(yong)证明,w[…

Manacher算法 Manacher模板题…… //HDOJ 3068 #include<cstdio> #include<cstring> #include<cstdlib> #include<iostream> #include<algorithm> #define rep(i,n) for(int i=0;i<n;++i) #define F(i,j,n) for(int i=j;i<=n;++i) #define D(i,j…

题意:n个数 m个询问 每个询问[l, r]的和, 再把[l, r]之间所有的数变为平方(模为9223372034707292160LL) 很明显的线段树 看到这个模(LLONG_MAX为9223372036854775807) 很明显平方时会爆LL 很容易发现所有数平方模了几次之后值就不再改变了 而且这个“几次”相当小 因此直接暴力搞就好了 public static void main(String[] args) { Scanner in = new Scanner(System.in);…

题意很简单, 就是给个n, 算下面这个式子的值. $\sum\limits_{i=1}^{n-1} i \otimes (n-i)$ 重点是n的范围:2≤n<10500 比赛的时候 OEIS一下得到了一个公式: $a_0=a_1=a_2=0$; n为偶数 : $2 \times a_{\frac{n}{2}}+2 \times a_{\frac{n}{2}-1}+4\times (\frac{n}{2}-1) $ n为奇数 : $4\times a_{\frac{n-1}{2}}+6\times…

这道题就是HDOJ的1061的变形: 1061 :求n的n次方的个位数 http://www.cnblogs.com/xiezie/p/5596779.html 1097 :求n的m次方的个位数 因此,就不在这里赘述了 以下是JAVA实现: import java.io.BufferedInputStream; import java.util.ArrayList; import java.util.Scanner; public class Main { public static void…

Problem Description Eddy usually writes articles ,but he likes mixing the English letter uses, for example "computer science" is written frequently "coMpUtEr scIeNce" by him, this mistakes lets Eddy's English teacher be extremely disco…

先说一下Java对于ACM的一些优点吧: (1) 对于熟悉C/C++的程序员来说Java 并不难学,两周时间基本可以搞定一般的编程,再用些时间了解一下Java库就行了.Java的语法和C++非常类似,可以说是C++的升级版,只是更加强调面向对象思想而已.(个人见解...) (2) 在一般比赛中,Java程序会有额外的时间和空间,但真正进行大规模运算时Java并不比C/C++慢,输入输出效率比较低而已 (3) Java 代码简单且功能强大,有些像高精度之类的算法用Java实现起来更为简洁方便(AC…

Escape from Tetris Time Limit: 12000/4000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1103    Accepted Submission(s): 280 Problem Description 由于整日整夜地对着这个棋盘,Lele终于走火入魔.每天一睡觉,他就会梦到自己会被人被扔进一个棋盘中,一直找不到出路,然后从梦中惊醒.久而久之…

因为是circle sequence,可以在序列最后+序列前n项(或前k项);利用前缀和思想,预处理出前i个数的和为sum[i],则i~j的和就为sum[j]-sum[i-1],对于每个j,取最小的sum[i-1],这就转成一道单调队列了,维护k个数的最小值. ---------------------------------------------------------------------------------- #include<cstdio> #include<deque&…

(置顶,复习)A + B Again 链接:http://acm.hdu.edu.cn/showproblem.php?pid=2057 Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 35905    Accepted Submission(s): 14614 Problem Description There must be many…

HDOJ 1238 Substrings [最长公共子串] Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 11430 Accepted Submission(s): 5490 Problem Description You are given a number of case-sensitive strings of alphabetic…

HDOJ 2203 亲和串 [KMP] Time Limit: 3000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 16573 Accepted Submission(s): 7273 Problem Description 人随着岁数的增长是越大越聪明还是越大越笨,这是一个值得全世界科学家思考的问题,同样的问题Eddy也一直在思考,因为他在很小的时候就知道亲和串如何判…

HDOJ 1423 Greatest Common Increasing Subsequence [DP][最长公共上升子序列] Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 8768 Accepted Submission(s): 2831 Problem Description This is a problem from ZOJ 24…

HDOJ 1501 Zipper [DP][DFS+剪枝] Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 10886 Accepted Submission(s): 3925 Problem Description Given three strings, you are to determine whether the third str…

HDOJ 1257 最少拦截系统 [DP] Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 50753 Accepted Submission(s): 19895 Problem Description 某国为了防御敌国的导弹袭击,发展出一种导弹拦截系统.但是这种导弹拦截系统有一个缺陷:虽然它的第一发炮弹能够到达任意的高度,但是以后每一发炮弹…

HDOJ 1159 Common Subsequence[DP] Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 44280 Accepted Submission(s): 20431 Problem Description A subsequence of a given sequence is the given sequence wit…

汉诺塔III Time Limit: 1000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 15442 Accepted Submission(s): 7147 Problem Description 约19世纪末,在欧州的商店中出售一种智力玩具,在一块铜板上有三根杆,最左边的杆上自上而下.由小到大顺序串着由64个圆盘构成的塔.目的是将最左边杆上的盘全部移到右边的杆上,条…

Scanner cin = new Scanner(new BufferedInputStream(System.in)); 这样定义Scanner类的对象读入数据可能会快一些! 参考这个博客继续补充内容:http://blog.csdn.net/lmyclever/article/details/6408980 1. 单元变量常用大数操作: import java.util.Scanner; import java.math.*; public class Main{ public stati…

Play on Words Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 5622    Accepted Submission(s): 1850 Problem Description Some of the secret doors contain a very interesting word puzzle. The team…