题意: 有n<=100双鞋子,分别属于一个牌子,共k<=10个牌子.现有m<=10000钱,问每个牌子至少挑1双,能获得的最大价值是多少? 思路: 分组背包的变形,变成了相反的,每组物品至少挑1件(分组背包问题是至多挑1件). 由于每个牌子至少买1双,那么可以先装一件最便宜的进去,如果有好的再更新(注意每次的容量下限).而且同一双鞋子不能多次购买,这里要用01背包.对于当前容量cap,可能只装了某一牌子的一双鞋子(不一定最便宜),也可能装了多双,也可能只装了那双硬塞进去的最便宜的. 注意…

I love sneakers! Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Problem Description After months of hard working, Iserlohn finally wins awesome amount of scholarship. As a great zealot of sneakers, he decides to s…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=3033 题意:给你K种品牌,每种品牌有不同种鞋,现在每种品牌至少挑一款鞋,问获得的最大价值,如果不能每种品牌都挑到则输出Impossible 自己太弱了!!!!!这个题都想不出来!!!!!还要看题解!!!!!! 设计状态dp[i][j]代表从前i种品牌里花了不超过j元钱. 那么状态转移可以这样: 1.我只买第i种品牌的第k个. 2.我在第i种品牌里不光买第k个. 变成状态转移方程就是: 1. dp[i…

I love sneakers! Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 2884    Accepted Submission(s): 1180 Problem Description After months of hard working, Iserlohn finally wins awesome amount of s…

I love sneakers! Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3265    Accepted Submission(s): 1337 Problem Description After months of hard working, Iserlohn finally wins awesome amount of sc…

题目链接:https://vjudge.net/contest/103424#problem/K 转载于:https://blog.csdn.net/acm_davidcn/article/details/5549933 题目大意: 给n个物品,和m块钱,输出能够购买最多物品的个数和购买这么多物品的方案数.  解题分析: 背包的一种进化版 , 除了记录最多能买多少个 , 需要记录买这么多个的方法 , 所以要在二维的基础上加多一维 . 状态转移方程如下 : f[i][j][k]=f[i-1][j-…

You, the leader of Starship Troopers, are sent to destroy a base of the bugs. The base is built underground. It is actually a huge cavern, which consists of many rooms connected with tunnels. Each room is occupied by some bugs, and their brains hide…

Herbs Gathering 10.76% 1000ms 32768K   Collecting one's own plants for use as herbal medicines is perhaps one of the most self-empowering things a person can do, as it implies that they have taken the time and effort to learn about the uses and virtu…

I love sneakers! Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 4503 Accepted Submission(s): 1845 Problem Description After months of hard working, Iserlohn finally wins awesome amount of scholars…

I love sneakers! Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 4919    Accepted Submission(s): 2022 Problem Description After months of hard working, Iserlohn finally wins awesome amount of sc…