描述 Institute of Computational Linguistics (ICL), Peking University is an interdisciplinary institute of science and liberal arts, it focuses primarily on the fundamental researches and applications of language information processing. The research of…

描述 The history of Peking University Library is as long as the history of Peking University. It was build in 1898. At the end of year 2015, it had about 11,000 thousand volumes of books, among which 8,000 thousand volumes were paper books and the othe…

#1389 : Sewage Treatment 时间限制:2000ms 单点时限:2000ms 内存限制:256MB 描述 After years of suffering, people could not tolerate the pollution in the city any more, and started a long-lasting protest. Eventually, the municipal government made up its mind to deal w…

#1391 : Countries 时间限制:1000ms 单点时限:1000ms 内存限制:256MB 描述 There are two antagonistic countries, country A and country B. They are in a war, and keep launching missiles towards each other. It is known that country A will launch N missiles. The i-th miss…

#1392 : War Chess 时间限制:1000ms 单点时限:1000ms 内存限制:256MB 描述 Rainbow loves to play kinds of War Chess games. There are many famous War Chess games such as "Biography of Cao Cao", "Anecdotes of Wagang Mountain", etc. In this problem, let's c…

#1578 : Visiting Peking University 时间限制:1000ms 单点时限:1000ms 内存限制:256MB 描述 Ming is going to travel for n days and the date of these days can be represented by n integers: 0, 1, 2, …, n-1. He plans to spend m consecutive days(2 ≤ m ≤ n)in Beijing. Durin…

#1228 : Mission Impossible 6 时间限制:1000ms 单点时限:1000ms 内存限制:256MB 描述 You must have seen the very famous movie series,"Mission Impossible", from 1 to 4. And "Mission Impossible 5" is now on screen in China. Tom Cruise is just learning pro…

时间限制:1000ms 单点时限:1000ms 内存限制:256MB 描述 You are given a list of integers a0, a1, …, a2^k-1. You need to support two types of queries: 1. Output Minx,y∈[l,r] {ax∙ay}. 2. Let ax=y. 输入 The first line is an integer T, indicating the number of test cases. (…

描述 You are given a list of integers a0, a1, …, a2^k-1. You need to support two types of queries: 1. Output Minx,y∈[l,r] {ax∙ay}. 2. Let ax=y. 输入 The first line is an integer T, indicating the number of test cases. (1≤T≤10). For each test case: The fi…

题意:平面上n个点,问你是否存在一种黑白染色方案,使得对于该方案,无法使用一条直线使得黑色点划分在直线一侧,白色点划分在另一侧.如果存在,输出一种方案. 如果n<=2,显然不存在. 如果所有点共线,且n>2,只需交替染色即可. 设凸包上的点数为K,如果K==n,且n==3,不存在,如果n>3,只需交替染色即可. 如果K<n,只需凸包上点涂黑,内部点留白即可. #include<cstdio> #include<algorithm> #include<c…

题意:给你一个序列(长度不超过2^17),支持两种操作:单点修改:询问区间中最小的ai*aj是多少(i可以等于j). 只需要线段树维护区间最小值和最大值,如果最小值大于等于0,那答案就是minv*minv: 如果最大值小于等于零,那么答案就是maxv*maxv: 要是最小值小于零,最大值大于零,答案就是minv*maxv. #include<cstdio> #include<cstring> #include<algorithm> using namespace std…

题意:给你一个串,仅含有a~g,且每个字母只出现最多一次.和一个光标初始位置,以及一个目标串,问你最少要多少的代价变化成目标串. 有五种操作:在光标前添加一个未出现过的字母,代价1. 删除光标前或者光标后的字母,代价1. 光标左移或者右移,代价0.5. 哈希,把串弄成一个八进制数,加上一个光标位置,状态数不超过8^8. 直接跑dijkstra即可. 要注意初始化的时候,可以单独记一个数组,表示用过的状态,仅仅重置这些状态,防止初始化复杂度过高. #include<cstdio> #includ…

编号 名称 通过率 通过人数 提交人数 A√水题(队友写的 Visiting Peking University 91% 1122 1228 B— Reverse Suffix Array 57% 68 119 C最大子矩阵和 Matrix 51% 182 353 D缩点/二分/数位dp Agent Communication 11% 23 209 E凸包 Territorial Dispute 57% 327 567 F— Cake 15% 15 95 G√找规律 Bounce 74% 456…

#1586 : Minimum Time Limit:1000ms Case Time Limit:1000ms Memory Limit:256MB Description You are given a list of integers a0, a1, …, a2^k-1. You need to support two types of queries: 1. Output Minx,y∈[l,r] {ax∙ay}. 2. Let ax=y. Input The first line is…

#1582 : Territorial Dispute 时间限制:1000ms 单点时限:1000ms 内存限制:256MB 描述 In 2333, the C++ Empire and the Java Republic become the most powerful country in the world. They compete with each other in the colonizing the Mars. There are n colonies on the Mars,…

#1584 : Bounce 时间限制:1000ms 单点时限:1000ms 内存限制:256MB 描述 For Argo, it is very interesting watching a circle bouncing in a rectangle. As shown in the figure below, the rectangle is divided into N×M grids, and the circle fits exactly one grid. The bouncing…

#1586 : Minimum 时间限制:1000ms 单点时限:1000ms 内存限制:256MB 描述 You are given a list of integers a0, a1, …, a2^k-1. You need to support two types of queries: 1. Output Minx,y∈[l,r] {ax∙ay}. 2. Let ax=y. 输入 The first line is an integer T, indicating the number…

#1236 : Scores 时间限制:4000ms 单点时限:4000ms 内存限制:256MB 描述 Kyle is a student of Programming Monkey Elementary School. Just as others, he is deeply concerned with his grades. Last month, the school held an examination including five subjects, without any do…

https://hihocoder.com/problemset/problem/1586 线段树操作,原来题并不难..... 当时忽略了一个重要问题,就是ax*ay要最小时,x.y可以相等,那就简单了!结果显然是模最小的数的平方或者是个负数. 要求乘积最小只要求区间内最大值.最小值和绝对值小的数,再判断min,max正负就行了. 下面的代码相当于建了三个树分别存Min,Max,Mid(abs(Min)) #include<iostream> #include<cstdio> #i…

#1235 : New Teaching Buildings 时间限制:2000ms 单点时限:2000ms 内存限制:256MB 描述 Thanks to the generous finance income, Programming Monkey Elementary School is going to build three new teaching buildings. The school could be seen as a connected graph with n vert…

题目链接: #1228 : Mission Impossible 6 解题思路: 认真读题,细心模拟,注意细节,就没有什么咯!写这个题解就是想记录一下rope的用法,以后忘记方便复习. rope(块状链表)属于SGI STL的一部分,不属于ISO C++标准库,但libstdc++-v3也包含了扩展,在头文件#include<ext/rope>,using namespace __gnu_cxx命名空间中.可以在很短的时间内实现快速的插入.删除和查找字符串. rope.size()    返回…

有时候,很简单的模板题,可能有人没有做出来,(特指 I ),到时候一定要把所有的题目全部看一遍 目录 B 题解 E F 题解 H I 题解&代码 J B 输入样例 3 2 1 2 1 2 3 1 输出样例 1 说明 In the first sample case, the sequence [a1,a2,a3]=[0,1,0][a_1,a_2,a_3]=[0,1,0][a1,a2,a3]=[0,1,0] meets all the constraints and has the minimum…

这个专栏开始介绍一些<ACM国际大学生程序设计竞赛题解>上的竞赛题目,读者可以配合zju/poj/uva的在线测评系统提交代码(今天zoj貌似崩了). 其实看书名也能看出来这本书的思路,就是一本题解书,简单暴力的通过题目的堆叠来提升解决编程问题的能力. 那么下面开始探索吧. poj1037: Description Background For years, computer scientists have been trying to find efficient solutions to…

题目链接 2018 ACM 国际大学生程序设计竞赛上海大都会 下午午休起床被同学叫去打比赛233 然后已经过了2.5h了 先挑过得多的做了 .... A题 rand x*n 次点,每次judge一个点位端点的共线向量数判断是否大于给定x 强行rand 500次 代码 #include<bits/stdc++.h> using namespace std; inline int read() { int x = 0,f = 1; char c = getchar(); while(c <…

链接:https://www.nowcoder.com/acm/contest/163/F 来源:牛客网 2018 ACM 国际大学生程序设计竞赛上海大都会赛重现赛 F Color it 时间限制:C/C++ 3秒,其他语言6秒 空间限制:C/C++ 262144K,其他语言524288K 64bit IO Format: %lld 题目描述 There is a matrix A that has N rows and M columns. Each grid (i,j)(0 ≤ i < N,…

2018 ACM 国际大学生程序设计竞赛上海大都会赛重现赛 F Color it (扫描线) 链接:https://ac.nowcoder.com/acm/contest/163/F来源:牛客网 时间限制:C/C++ 3秒,其他语言6秒 空间限制:C/C++ 262144K,其他语言524288K 64bit IO Format: %lld 题目描述 There is a matrix A that has N rows and M columns. Each grid (i,j)(0 ≤ i…

2018 ACM 国际大学生程序设计竞赛上海大都会赛重现赛 J Beautiful Numbers (数位DP) 链接:https://ac.nowcoder.com/acm/contest/163/J?&headNav=acm来源:牛客网 时间限制:C/C++ 8秒,其他语言16秒 空间限制:C/C++ 262144K,其他语言524288K 64bit IO Format: %lld 题目描述 NIBGNAUK is an odd boy and his taste is strange a…

传送门:2018 ACM 国际大学生程序设计竞赛上海大都会赛 2018 ACM 国际大学生程序设计竞赛上海大都会赛重现赛2018-08-05 12:00:00 至 2018-08-05 17:00:00时长: 5小时 比赛情况 实录 难度差不多介于省赛和区域赛之间吧.开题A是计算几何,有点思路后就先放下去写签到题,B读错题WA一发,K直接套模板,然后就接着看A.之前写过类似题,没注意数据范围就头铁地交了发n3的代码,TE后才发现数据范围是之前那道十多倍,就听学长的先看D.推十分钟公式无果后打算直…

题目:http://acm.hdu.edu.cn/showproblem.php?pid=6705 path Time Limit: 2000/2000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 1250    Accepted Submission(s): 257 Problem Description You have a directed weighted graph…

题目:http://acm.hdu.edu.cn/showproblem.php?pid=6709 Fishing Master Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 631    Accepted Submission(s): 170 Problem Description Heard that eom is a fishin…