题目地址:CF1139B Chocolates 前一个必须要少于后一个,那么模拟+贪心即可 倒序模拟,每次在上次取的个数减一和这次可以取的最多数量之间取min 直到为0(注意不要减到负数) 再就是注意开long long #include <bits/stdc++.h> #define ll long long using namespace std; const int N = 2e5 + 6; int n, a[N], x = 1e9 + 1; ll ans; int main() { c…

B. Chocolates time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output You went to the store, selling nn types of chocolates. There are aiai chocolates of type ii in stock. You have unlimited amoun…

题意 将正整数N拆分成若干个正整数之和,问有多少种不重复的拆分方案. \(n \leq 5000\) 分析 用f(i,j)表示将i拆成若干个数字,最大的那个数字(即最后一个数)不超过j的方案数. 转移有两种情况,第一种是最大的数字不取j,第二种是取j \[f(i,j)=f(i,j-1)+f(i-j,j)\] 时间复杂度\(O(N^2)\) 然后就可以做了吗?稍微分析一下发现需要高精度,那么空间复杂度是\(O(W \cdot N^2)\)的,W=100. 显然不行. 考虑压位高精,每个整数存8位,…

题目链接:https://vjudge.net/problem/Gym-101991D 具体思路:首先看数据范围,暴力肯定不可以,可以下离散化,然后先求出离散化后每一个点到(1,1)的符合题目的要求的个数,然后再按照一块一块的求,打个比方,离散化后 (1,1) (1,2)(1,3) (2,1) (2,2) (2,3) (3,1) (3,2) (3,3) 如果(1,1)这个点满足,那么求一下这个点到(2,2)的面积(面积是2,这里计算的是整个方块里面的,不包括边界),这一块肯定是满足的,然后每一个…

题面戳这里 dp的姿势有两种(都保证了拆分的有序): \(f_{i,j}\)表示拆分中最大数为\(j\),和为\(i\)的方案数.转移\[f_{i,j} = \sum_{k = 1}^j f_{i-j,k}\] 然后可以用前缀和优化一下.复杂度\(O(N^2)\) \(f_{i,j}\)表示和为\(i\),拆分为\(j\)个数的方案数.转移这样考虑,要么在拆分方案中增加\(1\),要么把拆分中所有数增加\(1\).方程如下 \[f_{i,j} = f_{i-1,j-1}+f_{i-j,j}\]…

You went to the store, selling …

C - Mike and Chocolate Thieves Description Bad news came to Mike's village, some thieves stole a bunch of chocolates from the local factory! Horrible! Aside from loving sweet things, thieves from this area are known to be very greedy. So after a thie…

Is certainly his dresser seem or dress creation process into video clip. Bus dropped???? Especially bus travel credit card, just within August was grabbed from the demo, if simply no certificate could end up being big difficulty???? 96-way driver's v…

第一部分 1 初级句型-简单句(Simple Sentences):(1.1)基本句型&补语.(1.2)名词短语&冠词.(1.3)动词时态.(1.4)不定式短语.(1.5)动名词.(1.6)分词.(1.7)形容词.(1.8)副词.(1.9)语气词.(1.10)介词.(1.11)主谓一致性   1.1 五种基本句型&补语 1.1.1 五中基本句型 主谓(sv) 主谓宾(svo) 主谓宾宾(svoo) 主谓补(svc) 主谓宾补(svoc) 一个句子需要“主语”+“动词(谓语)”才能表…

    我們公司所代管的網站裡,有幾個流量是非常大的,在尖峰的時刻同時上線人數可能高達數千到數萬人,而在這個時候如果使用 netstat 或 TCPView 查看所有 TCP 連線時就會看到非常多處於 TIME_WAIT 狀態的連線,平時就會多達數千條 TIME_WAIT 連線之多,尖峰的時候還有一萬多條 TIME_WAIT 連線的狀況,雖然這些連線目前還不致於造成連線發生問題,但基於一股好奇心才決定研究到底查探個究竟,深入研究後才得知這問題現在不處理,等網站流量在大一些的時候那就會出亂子了!…

Stat2.2x Probability(概率)课程由加州大学伯克利分校(University of California, Berkeley)于2014年在edX平台讲授. PDF笔记下载(Academia.edu) ADDITIONAL PRACTICE FOR THE FINAL PROBLEM 1 A box contains 8 dark chocolates, 8 milk chocolates, and 8 white chocolates. (It’s amazing how t…

Stat2.2x Probability(概率)课程由加州大学伯克利分校(University of California, Berkeley)于2014年在edX平台讲授. PDF笔记下载(Academia.edu) Summary Independent $$P(A\cap B)=P(A)\cdot P(B)$$ Binomial Distribution $$C_{n}^{k}\cdot p^k\cdot(1-p)^{n-k}$$ R function: dbinom(k, n, p) U…

Stat2.2x Probability(概率)课程由加州大学伯克利分校(University of California, Berkeley)于2014年在edX平台讲授. PDF笔记下载(Academia.edu) Summary Bayes Theorem $$P(A_i|B)=\frac{P(B|A_i)\cdot P(A_i)}{\sum_{j}P(B|A_j)\cdot P(A_j)}$$ where $$P(B)=\sum_{j}P(B|A_j)\cdot P(A_j)$$ GRA…

D - Half of and a Half Time Limit:1000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Submit Status Practice HDU 1592 Description Gardon bought many many chocolates from the A Chocolate Market (ACM). When he was on the way to meet Angel…

As a professional forensic guy, you can not be too careful to anlyze the evidence. Especially when the case is about malware or hacker. Protect your workstation is your responsibility. You are a professional forensic examiner, so don't get infected w…

原题: Description Bad news came to Mike's village, some thieves stole a bunch of chocolates from the local factory! Horrible! Aside from loving sweet things, thieves from this area are known to be very greedy. So after a thief takes his number of choco…

在编写代码的时候有个神奇的工具总是好的!下面这里收集了 40+ PHP 代码片段,可以帮助你开发 PHP 项目. 这些 PHP 片段对于 PHP 初学者也非常有帮助,非常容易学习,让我们开始学习吧- 1. 发送 SMS 在开发 Web 或者移动应用的时候,经常会遇到需要发送 SMS 给用户,或者因为登录原因,或者是为了发送信息.下面的 PHP 代码就实现了发送 SMS 的功能. 为了使用任何的语言发送 SMS,需要一个 SMS gateway.大部分的 SMS 会提供一个 API,这里是使用 M…

原文地址: http://www.funtoo.org/Awk_by_Example,_Part_1?ref=dzone http://www.funtoo.org/Awk_by_Example,_Part_2 http://www.funtoo.org/Awk_by_Example,_Part_3 In defense of awk In this series of articles, I'm going to turn you into a proficient awk coder. I'…

CodeForces 429B  Working out 预处理出从四个顶点到某个位置的最大权值,再枚举相遇点,相遇的时候只有两种情况,取最优解即可. #include<iostream> #include<vector> #include<cmath> #include<map> #include<algorithm> #include<cstring> #include<cstdio> #include<cstd…

Description In 2100, ACM chocolate will be one of the favorite foods in the world. "Green, orange, brown, red...", colorful sugar-coated shell maybe is the most attractive feature of ACM chocolate. How many colors have you ever seen? Nowadays, i…

A. Mishka and Game time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Mishka is a little polar bear. As known, little bears loves spending their free time playing dice for chocolates. Once in…

题目链接: C. Joty and Chocolate time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Little Joty has got a task to do. She has a line of n tiles indexed from 1 to n. She has to paint them in a stran…

Mike and Chocolate Thieves 题目链接: http://acm.hust.edu.cn/vjudge/contest/121333#problem/G Description Bad news came to Mike's village, some thieves stole a bunch of chocolates from the local factory! Horrible! Aside from loving sweet things, thieves fr…

A. Far Relative’s Birthday Cake time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Door's family is going celebrate Famil Doors's birthday party. They love Famil Door so they are planning to m…

Time Limit:2000MS     Memory Limit:262144KB     64bit IO Format:%I64d & %I64u   Description Bad news came to Mike's village, some thieves stole a bunch of chocolates from the local factory! Horrible! Aside from loving sweet things, thieves from this…

A. Mishka and Game time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Mishka is a little polar bear. As known, little bears loves spending their free time playing dice for chocolates. Once in…

2016/02/14 6203 4    在编写代码的时候有个神奇的工具总是好的!下面这里收集了 50+ PHP 代码片段,可以帮助你开发 PHP 项目. 这些 PHP 片段对于 PHP 初学者也非常有帮助,非常容易学习,让我们开始学习吧- 1. 发送 SMS 在开发 Web 或者移动应用的时候,经常会遇到需要发送 SMS 给用户,或者因为登录原因,或者是为了发送信息.下面的 PHP 代码就实现了发送 SMS 的功能. 为了使用任何的语言发送 SMS,需要一个 SMS gateway.大部分的…

Chocolate Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 8245   Accepted: 2186   Special Judge Description In 2100, ACM chocolate will be one of the favorite foods in the world.  "Green, orange, brown, red...", colorful sugar-coate…

 Dima and Guards Time Limit:1000MS     Memory Limit:262144KB     64bit IO Format:%I64d & %I64u Submit Status Description Nothing has changed since the last round. Dima and Inna still love each other and want to be together. They've made a deal with S…

商品类: #ifndef ITEM_H_ #define ITEM_H_ class SalesTax; //This represents the Items which don't have an Import duty or any sales tax class Item { public: //Constructors Item(); Item (SalesTax *aSalesTax); //Interface Functions for Item //To calculate th…