HDU 3466 Proud Merchants 带有限制的01背包问题 题意 最近,伊萨去了一个古老的国家.在这么长的时间里,它是世界上最富有.最强大的王国.因此,即使他们的国家不再那么富有,这个国家的人民仍然非常自豪. 商人是最典型的,他们每一个只卖了一个项目,价格是PI,但他们拒绝与你交易如果你的钱低于QI,ISEA评估每一个项目的价值VI. 如果他有M单位的钱,伊萨能得到的最大价值是多少? 解题思路 p代表需要的价钱,q代表买这个物品的门槛. 思路就是先尝试买qi-pi大的商品,即按照q…

Proud Merchants Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/65536 K (Java/Others) Total Submission(s): 1978    Accepted Submission(s): 792 Problem Description Recently, iSea went to an ancient country. For such a long time, it was…

Proud Merchants Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/65536 K (Java/Others)Total Submission(s): 4039    Accepted Submission(s): 1677 Problem Description Recently, iSea went to an ancient country. For such a long time, it was…

题目链接: 传送门 Proud Merchants Time Limit: 1000MS     Memory Limit: 65536K Description Recently, iSea went to an ancient country. For such a long time, it was the most wealthy and powerful kingdom in the world. As a result, the people in this country are…

这道题目看出背包非常easy.主要是处理背包的时候须要依照q-p排序然后进行背包. 这样保证了尽量多的利用空间. Proud Merchants Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/65536 K (Java/Others) Total Submission(s): 2674    Accepted Submission(s): 1109 Problem Description Recently, iSea…

题目链接: 传送门 Proud Merchants Time Limit: 1000MS     Memory Limit: 65536K Description Recently, iSea went to an ancient country. For such a long time, it was the most wealthy and powerful kingdom in the world. As a result, the people in this country are…

Problem Description Recently, iSea went to an ancient country. For such a long time, it was the most wealthy and powerful kingdom in the world. As a result, the people in this country are still very proud even if their nation hasn’t been so wealthy a…

题意:物品有三个属性,价格p,解锁钱数下线q(手中余额>=q才有机会购买该商品),价值v.钱数为m,问购买到物品价值和最大. 思路:首先是个01背包问题,但购买物品受限所以应先排序.考虑相邻两个物品1和2,假设先购买1再购买2,若…

Recently, iSea went to an ancient country. For such a long time, it was the most wealthy and powerful kingdom in the world. As a result, the people in this country are still very proud even if their nation hasn't been so wealthy any more. The merchan…

http://acm.hdu.edu.cn/showproblem.php?pid=3466 题意: 最近,iSea去了一个古老的国家.在这么长的时间里,它是世界上最富有和最强大的王国.结果,这个国家的人民仍然非常自豪,即使他们的国家没有那么富有了.商人是最典型的,每个人只卖一个项目,价格是Pi,但如果你的钱少于Qi,他们会拒绝与你交易,iSea评估每个项目一个值Vi.如果他有M单位的钱,iSea可以获得的最大价值是多少? 思路: 这道题的话多加了一个Qi. 一定要注意,若要保证动归方程无后效性…

题意: 要买一些东西,每件东西有价格和价值,但是买得到的前提是身上的钱要比该东西价格多出一定的量,否则不卖.给出身上的钱和所有东西的3个属性,求最大总价值. 思路: 1)WA思路:与01背包差不多,dp过程中记录每个容量所能获得的最大价值以及剩余的容量.实现是,开个二维dp数组,从左往右扫,考虑背包容量为j的可获得价值量,根据该剩余容量得知要更新后面哪个背包容量[j+?] ,如果剩余容量大于q[i]那么可以直接装进去,更新价值以及剩余容量,否则,考虑更新的是更大的背包容量.这个思路有缺陷,一直找…

题目链接:https://vjudge.net/contest/103424#problem/J 转载于:https://www.bbsmax.com/A/RnJW16GRdq/ 题目大意: 有n个商品m块钱,给出买每个商品所花费的钱P.钱包里需要至少Q才有资格买.商品的价值V.问你如何购买商品的价值最大. 解题分析:考虑下面的例子:A:p1=5, q1=10, v1=5; B:p2=3, q2=5, v2=6; 如果先买物品A再买物品B的话我至少需要10元钱,也就是money >= p1+q2…

题目大意:现在给出商品,有三个参数,记为pi,qi,vi,vi是商品的在你心里价值,pi是商品的价格,qi是你要买商品的时候至少需要的钱然后求可得的最大价值. 单词积累:Merchants 商人  typical 标志性的 题解:首先我们考虑商品A,B,其pi,qi,vi记为pA,qA,vA,pB,qB,vB,我们可以发现,有些买东西的顺序也会决定你可以得到的最大价值,那么怎么才可以使顺序无影响呢?可以这样想,我们如果A,B都要买,先买A,那么需要的资金至少为pA+qB,先买B,那么需要的资金至…

Recently, iSea went to an ancient country. For such a long time, it was the most wealthy and powerful kingdom in the world. As a result, the people in this country are still very proud even if their nation hasn't been so wealthy any more. The merchan…

Problem Description Recently, iSea went to an ancient country. For such a long time, it was the most wealthy and powerful kingdom in the world. As a result, the people in this country are still very proud even if their nation hasn't been so wealthy a…

先排序预处理,后01背包. #include <stdio.h> #include <string.h> #include <stdlib.h> #define MAX(a, b) (a>b) ? a:b ]; typedef struct { int p, q, v; } stuff_st; stuff_st stuffs[]; int comp(const void *a, const void *b) { stuff_st *p = (stuff_st *)…

题目:http://acm.hdu.edu.cn/showproblem.php?pid=3466 题意:假设你有M元,已经Pi,Qi,Vi(i为角标,1<i<N),当M>Qi,时才能购买该商品,得到价值Vi,问得到的最大的价值. 思路:知道是变形的01背包问题,但是思考了很久不知道怎么解决,于是看了好几种不同款式的大佬的代码和证明才看懂,如下是自己写的证明: 如果不改变,直接用01背包的话呢,就是: for(int i=0;i<n;i++) for(int j=v;j>=a…

Proud Merchants Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/65536 K (Java/Others)Total Submission(s): 4257    Accepted Submission(s): 1757 Problem Description Recently, iSea went to an ancient country. For such a long time, it was…

Proud Merchants Time Limit : 2000/1000ms (Java/Other)   Memory Limit : 131072/65536K (Java/Other) Total Submission(s) : 12   Accepted Submission(s) : 5 Problem Description Recently, iSea went to an ancient country. For such a long time, it was the mo…

HDOJ(HDU).3466 Dividing coins ( DP 01背包 无后效性的理解) 题意分析 要先排序,在做01背包,否则不满足无后效性,为什么呢? 等我理解了再补上. 代码总览 #include <iostream> #include <cstdio> #include <cstring> #include <algorithm> #define nmax 505 #define nn 505*100 using namespace std;…

I - Proud Merchants Time Limit:1000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Description Recently, iSea went to an ancient country. For such a long time, it was the most wealthy and powerful kingdom in the world. As a result, the…

Proud Merchants Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/65536 K (Java/Others)Total Submission(s): 5599    Accepted Submission(s): 2362 Problem Description Recently, iSea went to an ancient country. For such a long time, it was…

Proud Merchants Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 131072/65536 K (Java/Others) Total Submission(s): 3557 Accepted Submission(s): 1479 Problem Description Recently, iSea went to an ancient country. For such a long time, it was the m…

Proud Merchants Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/65536 K (Java/Others)Total Submission(s): 3556    Accepted Submission(s): 1478 Problem Description Recently, iSea went to an ancient country. For such a long time, it was…

题目传送门 Proud Merchants Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/65536 K (Java/Others)Total Submission(s): 7536    Accepted Submission(s): 3144 Problem Description Recently, iSea went to an ancient country. For such a long time, i…

B - 最大报销额 Time Limit:1000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Submit Status Practice HDU 1864 Appoint description: Description 现有一笔经费可以报销一定额度的发票.允许报销的发票类型包括买图书(A类).文具(B类).差旅(C类),要求每张发票的总额不得超过1000元,每张 发票上,单项物品的价值不得超过600元.现请你编写…

http://acm.hdu.edu.cn/showproblem.php?pid=4815 Description A crowd of little animals is visiting a mysterious laboratory � The Deep Lab of SYSU. “Are you surprised by the STS (speech to speech) technology of Microsoft Research and the cat face recogn…

题目链接: http://acm.hdu.edu.cn/showproblem.php?pid=2602 Bone Collector Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 77450    Accepted Submission(s): 32095 Problem Description Many years ago , in…

Buy the souvenirs Time Limit: 10000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Problem Description When the winter holiday comes, a lot of people will have a trip. Generally, there are a lot of souvenirs to sell, and sometimes…

原题代号:HDU 2602 原题链接:http://acm.hdu.edu.cn/showproblem.php?pid=2602 原题描述: Problem Description Many years ago , in Teddy’s hometown there was a man who was called “Bone Collector”. This man like to collect varies of bones , such as dog’s , cow’s , also…