http://acm.hdu.edu.cn/showproblem.php?pid=2660 f[v][u]=max(f[v][u],f[v-1][u-w[i]]+v[i]; 注意中间一层必须逆序循环. #include <cstdio> #include <cstring> #include <algorithm> using namespace std; ][]; ],w[]; int main() { //freopen("a.txt",&qu…

HDOJ(HDU).2660 Accepted Necklace (DFS) 点我挑战题目 题意分析 给出一些石头,这些石头都有自身的价值和重量.现在要求从这些石头中选K个石头,求出重量不超过W的这些石头的最大价值是多少? 类似于之前讨论到的数字选不选的问题,此处面临的情况是石头选不选,若选进行一个dfs,若不选择进行另外一个dfs.考虑递归边界: 1.当选够了K个的时候,终止递归: 2.当当前重量大于W的时候,终止递归: 3.当所选石头的下标(代码中的pos)超过石头数量的时候,终止递归: 若…

Watch The Movie Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 65535/65535 K (Java/Others) Total Submission(s): 7811    Accepted Submission(s): 2496 Problem Description New semester is coming, and DuoDuo has to go to school tomorrow. She dec…

FATE Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 7363    Accepted Submission(s): 3398 Problem Description 最近xhd正在玩一款叫做FATE的游戏,为了得到极品装备,xhd在不停的杀怪做任务.久而久之xhd开始对杀怪产生的厌恶感,但又不得不通过杀怪来升完这最后一级.现在的问…

题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=2660 Accepted Necklace Description I have N precious stones, and plan to use K of them to make a necklace for my mother, but she won't accept a necklace which is too heavy. Given the value and the weight…

Tug of War Time Limit: 3000MS Memory Limit: 65536K Description A tug of war is to be arranged at the local office picnic. For the tug of war, the picnickers must be divided into two teams. Each person must be on one team or the other; the number of p…

FATE Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 11908    Accepted Submission(s): 5645 Problem Description 最近xhd正在玩一款叫做FATE的游戏,为了得到极品装备,xhd在不停的杀怪做任务.久而久之xhd开始对杀怪产生的厌恶感,但又不得不通过杀怪来升完这最后一级.现在的…

Accepted Necklace Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 2474    Accepted Submission(s): 973 Problem Description I have N precious stones, and plan to use K of them to make a necklace f…

Problem Description I have N precious stones, and plan to use K of them to make a necklace for my mother, but she won't accept a necklace which is too heavy. Given the value and the weight of each precious stone, please help me find out the most valu…

背景 NASA(美国航空航天局)因为航天飞机的隔热瓦等其他安 全技术问题一直大伤脑筋,因此在各方压力下终止了航天 飞机的历史,但是此类事情会不会在以后发生,谁也无法 保证,在遇到这类航天问题时,解决方法也许只能让航天 员出仓维修,但是多次的维修会消耗航天员大量的能量, 因此NASA便想设计一种食品方案,让体积和承重有限的 条件下多装载一些高卡路里的食物. 描述 航天飞机的体积有限,当然如果载过重的物品,燃料会浪费很多钱, 每件食品都有各自的体积.质量以及所含卡路里,在告诉你体积 和质量的最大值的…