Classes 思路:a中包含的元素:只参加a的,只参加a且b的,只参加a且c的,只参加a且b且c的: b中包含的元素:只参加b的,只参加a且b的,只参加b且c的,只参加a且b且c的: c中包含的元素:只参加c的,只参加b且c的,只参加a且c的,只参加a且b且c的: ab中包含的元素:只参加a且b的,只参加a且b且c的: ac中包含的元素:只参加a且c的,只参加a且b且c的: bc中包含的元素:只参加b且c的,只参加a且b且c的: abc中包含的元素:只参加a且b且c的: 只要从abc开始依次往…

题目链接 Problem Description The school set up three elective courses, assuming that these courses are A, B, C. N classes of students enrolled in these courses. Now the school wants to count the number of students who enrolled in at least one course in e…

Problem Description The school set up three elective courses, assuming that these courses are A, B, C. N classes of students enrolled in these courses.Now the school wants to count the number of students who enrolled in at least one course in each cl…

Spring-outing Decision Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 676    Accepted Submission(s): 220 Problem Description Now is spring ! The sunshine is warm , the flowers is coming out . H…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=5101 题目意思:给出 n 个 classes 和 Dudu 的 IQ(为k),每个classes 都有相应的人,每个人又有相应的IQ.现在要求从这些classes挑选两个人,满足IQ之和 > k,不过要满足这两个人不能来自同一个class的. 解题思路不难想出,直接所有人两两之和 > k - 同一个class 两两之和 > k  就是答案了. 不过很容易超时!!!! 用二分就可以过了.二分有…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1052 Problem Description Here is a famous story in Chinese history. "That was about 2300 years ago. General Tian Ji was a high official in the country Qi. He likes to play horse racing with the king and…

题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=1885 Key Task Description The Czech Technical University is rather old — you already know that it celebrates 300 years of its existence in 2007. Some of the university buildings are old as well. And the…

题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=5101 Select Description One day, Dudu, the most clever boy, heard of ACM/ICPC, which is a very interesting game. He wants to take part in the game. But as we all know, you can't get good result without t…

传送门: http://acm.hdu.edu.cn/showproblem.php?pid=1885 Key Task Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 2654    Accepted Submission(s): 1143 Problem Description The Czech Technical Universi…

A Simple Game Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/65535 K (Java/Others)Total Submission(s): 1487    Accepted Submission(s): 939 Problem Description Agrael likes play a simple game with his friend Animal during the classes. I…

http://acm.hdu.edu.cn/showproblem.php?pid=1052 Tian Ji -- The Horse Racing Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 31270    Accepted Submission(s): 9523 Problem Description Here is a fam…

最近想从头开始刷点基础些的题,正好有个网站有关于各大oj的题目分类(http://www.pythontip.com/acm/problemCategory),所以写了点脚本把hdu和poj的一些题目链接按分类爬下来,然后根据题目的AC数目来作为难度指标进行从易到难的排序: POJ       题目标号  通过数 搜索: 1011 336071664 201111321 197841753 185021979 182532386 161761742 122131915 120101579 950…

pid=5145">[HDU 5145] NPY and girls(组合+莫队) NPY and girls Time Limit: 8000/4000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 593    Accepted Submission(s): 179 Problem Description NPY's girlfriend blew him out!H…

GPA Time Limit: 1000ms Memory Limit: 32768KB This problem will be judged on HDU. Original ID: 440664-bit integer IO format: %I64d      Java class name: Main   GPA(Grade-Point Average) is one way to measure students’ academic performance in PKU. Each…

[链接]http://acm.hdu.edu.cn/showproblem.php?pid=6106 [题意] 给出选 A,B,C,AB,AC,BC,ABC 课程的学生,其中 AB 是 A 和 B 都选-.,确定该班级的人数,给出的数据中有一些数错误的,但保证一组正确答案,输出最多的班级的人数 [题解] 除了ab<=a,ac<=c...那些常见的限制之外 如下图,还有1+4+2<=a以及1+4+3<=b.... [错的次数] 0 [反思] 在这了写反思 [代码] #include&…

Tian Ji -- The Horse Racing Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 11572    Accepted Submission(s): 3239 Problem Description Here is a famous story in Chinese history. "That was about 2…

2019 杭电多校 8 1011 题目链接:HDU 6667 比赛链接:2019 Multi-University Training Contest 8 Problem Description Roundgod is a famous milk tea lover at Nanjing University second to none. This year, he plans to conduct a milk tea festival. There will be \(n\) classes…

Q - Queue HDU - 5493 Problem Description NNN people numbered from 1 to NNN are waiting in a bank for service. They all stand in a queue, but the queue never moves. It is lunch time now, so they decide to go out and have lunch first. When they get bac…

坏味道--异曲同工的类(Alternative Classes with Different Interfaces) 特征 两个类中有着不同的函数,却在做着同一件事. 问题原因 这种情况往往是因为:创建这个类的程序员并不知道已经有实现这个功能的类存在了. 解决方法 如果两个函数做同一件事,却有着不同的签名,请运用 函数改名(Rename Method) 根据它们的用途重新命名. 运用 搬移函数(Move Method) . 添加参数(Add Parameter) 和 令函数携带参数(Parame…

Saving HDU Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 7194    Accepted Submission(s): 3345 Problem Description 话说上回讲到海东集团面临内外交困,公司的元老也只剩下XHD夫妇二人了.显然,作为多年拼搏的商人,XHD不会坐以待毙的.  一天,当他正在苦思冥想解困良策的…

http://acm.hdu.edu.cn/showproblem.php?pid=3037 Lucas定理模板. 现在才写,noip滚粗前兆QAQ #include<cstdio> #include<cstring> #include<algorithm> using namespace std; typedef long long ll; int jc[100003]; int p; int ipow(int x, int b) { ll t = 1, w = x;…

http://acm.hdu.edu.cn/showproblem.php?pid=4859 题目大意: 在一个矩形周围都是海,这个矩形中有陆地,深海和浅海.浅海是可以填成陆地的. 求最多有多少条方格线满足两侧分别是海洋和陆地 这道题很神 首先考虑一下,什么情况下能够对答案做出贡献 就是相邻的两块不一样的时候 这样我们可以建立最小割模型,可是都说是最小割了 无法求出最大的不相同的东西 所以我们考虑转化,用总的配对数目 - 最小的相同的对数 至于最小的相同的对数怎么算呢? 我们考虑这样的构造方法:…

Special equations Time Limit:1000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Submit Status Practice HDU 4569 Description Let f(x) = a nx n +...+ a 1x +a 0, in which a i (0 <= i <= n) are all known integers. We call f(x) 0 (mod…

The kth great number Time Limit:1000MS     Memory Limit:65768KB     64bit IO Format:%I64d & %I64u Submit Status Practice HDU 4006 Description Xiao Ming and Xiao Bao are playing a simple Numbers game. In a round Xiao Ming can choose to write down a nu…

How many integers can you find Time Limit:5000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Submit Status Practice HDU 1796 Description   Now you get a number N, and a M-integers set, you should find out how many integers which are sm…

(转)http://blog.csdn.net/u013081425/article/details/39240021 http://acm.hdu.edu.cn/showproblem.php?pid=4418 读了一遍题后大体明白意思,但有些细节不太确定.就是当它处在i点处,它有1~m步可以走,但他走的方向不确定呢.后来想想这个方向是确定的,就是他走到i点的方向,它会继续朝着这个方向走,直到转向回头. 首先要解决的一个问题是处在i点处,它下一步该到哪个点.为了解决方向不确定的问题,将n个点转…

问题: 在同步项目时,由于误操作将classes文件夹加入到了同步版本中,这样会导致每次更新程序编译后,会有很多class文件显示在同步清单中. 解决方案: 将classes文件不设置为同步. 1. 默认classes文件夹在eclipse中是隐藏的,在eclipse中如何显示classes文件夹. Project Explorer -> 三角(View Menu) ->Customize View..  然后将右边图中java output folders 勾去掉即可.    2. 如何设置…

1.题目地址: http://acm.hdu.edu.cn/showproblem.php?pid=3791 2.参考解题 http://blog.csdn.net/u013447865/article/details/22569639 这个题目本身简单,我的想法也很easy,但是发生在测试上,我把memset的参数搞错了,第三个是sizeof(a), 比如说int a[10],第三个参数应该是sizeof(10),也就是40,而我传的是10,导致后面的测试,都是答案错误,也就是后面的数据,初始…

problem:http://acm.hdu.edu.cn/showproblem.php?pid=4329 题意:模拟  a.     p(r)=   R'/i   rel(r)=(1||0)  R是前n次输入有关URL的个数  R'是后n次已经输入有关URL的个数 b.   另加:输入 istringstream #include<iostream> #include<sstream> //istringstream 必须包含这个头文件 #include<string&g…

http://acm.hdu.edu.cn/showproblem.php?pid=2586 题意:求最近祖先节点的权值和 思路:LCA Tarjan算法 #include <stdio.h> #include <string.h> #define maxn 40005 ],pos,dist[maxn],f[maxn]; bool vis[maxn]; struct Edge{ int to,val,next; }edge[maxn*]; void add(int u,int v,…