题目链接:http://poj.org/problem?id=1745 Divisibility Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 13431   Accepted: 4774 Description Consider an arbitrary sequence of integers. One can place + or - operators between integers in the sequen…

Charm Bracelet    POJ 3624 就是一道典型的01背包问题: #include<iostream> #include<stdio.h> #include<algorithm> #include<string.h> using namespace std; ],b[]; ]; int main() { int n,m,i,j; while(scanf("%d%d",&n,&m)!=EOF) { ;i&l…

题目大意:有n件珠宝,每个珠宝的魅力值为v,重量为w,求在重量不超过m的情况下能达到的最大魅力值. 题目思路:简单的01背包,由于二维数组会超内存所以应该压缩成一维数组. dp[i][j],表示选取i件物品,重量为j的情况下能达到的最大魅力值,则容易推出dp[i][j]=max(dp[i-1][j],dp[i-1][j-w[i]]+v[j]),可以看出当前的dp[i][j]只和前一轮有关,所以可以采用滚动数组的办法进行压缩:dp[j]=max(dp[j],dp[j-w[i]]+v[i]). #i…

题目链接:http://poj.org/problem?id=3624 Bessie has gone to the mall's jewelry store and spies a charm bracelet. Of course, she'd like to fill it with the best charms possible from the N (1 ≤ N ≤ 3,402) available charms. Each charm i in the supplied list…

Charm Bracelet Time Limit: 1 Sec  Memory Limit: 256 MB 题目连接 http://poj.org/problem?id=3624 Description Bessie has gone to the mall's jewelry store and spies a charm bracelet. Of course, she'd like to fill it with the best charms possible from the N (…

POJ.3624 Charm Bracelet(DP 01背包) 题意分析 裸01背包 代码总览 #include <iostream> #include <cstdio> #include <cstring> #include <algorithm> #define nmax 13000 #define nnmax 3500 using namespace std; int dp[nmax]; int w[nnmax],d[nnmax]; int main…

Charm Bracelet Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 38909   Accepted: 16862 Description Bessie has gone to the mall's jewelry store and spies a charm bracelet. Of course, she'd like to fill it with the best charms possible fro…

题目链接:poj 3624 这是最基础的背包问题,特点是:每种物品仅有一件,可以选择放或不放.             用子问题定义状态:即F [i, v]表示前i件物品恰放入一个容量为v 的背包可以             获得的最大价值.则其状态转移方程便是:             F [i, v] = max{F [i − 1, v], F [i − 1, v − Ci ] + Wi }             这个方程非常重要,基本上所有跟背包相关的问题的方程都是由它衍生       …

Charm Bracelet Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 29295   Accepted: 13143 Description Bessie has gone to the mall's jewelry store and spies a charm bracelet. Of course, she'd like to fill it with the best charms possible fro…

Charm Bracelet Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 34532   Accepted: 15301 Description Bessie has gone to the mall's jewelry store and spies a charm bracelet. Of course, she'd like to fill it with the best charms possible fro…