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…

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…

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…

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…

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…

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…

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…