P1757 通天之分组背包 hdu1712 ACboy needs your help hdu1712题意:A[i][j]表示用j天学习第i个课程能够得到A[i][j]的收益,求m天内获得的收益最大值,一天只能上一节课(转). 分组背包套路: ;i<=组数;++i) ;--j) ;k<=第i组元素个数;++k) ………… 保证一组只选<=1个 #include<iostream> #include<cstdio> #include<cstring> #…

http://acm.hdu.edu.cn/showproblem.php?pid=1712 Problem Description ACboy has N courses this term, and he plans to spend at most M days on study.Of course,the profit he will gain from different course depending on the days he spend on it.How to arrang…

最基础的分组背包~ #include <iostream> #include <cstdio> #include <cstdlib> #include <cstring> #include <cmath> #include <cctype> #include <algorithm> #include <queue> #include <deque> #include <queue> #i…

很简单的一道分组背包入门问题.不多解释了. #include <iostream> #include <cstdio> #include <cstring> using namespace std; ][]; ]; inline int Max(int a,int b) { if(a>b) return a; return b; } int main() { while(scanf("%d%d",&N,&M),(N||M)) {…

题意:一共$m$天,$n$门课程,每门课程花费$i$天得到$j$的价值,求最后获得的最大价值 解题关键:分组背包练习,注意循环的顺序不能颠倒 伪代码: $for$ 所有的组$k$   $for{\rm{ }}v = V..0$        $for$ 所有的$i$属于组$k$           $f[v] = \max (f[v],f[v - c[i]] + w[i])$ 背包问题本质上就是一种线性规划问题. #include<bits/stdc++.h> using namespace…

每种课程学习不同天数可以获得不同价值,这可以看成一个组,那么题目就是分组背包的模板题了. 1 #include<cstdio> 2 #include<cstring> 3 #include<algorithm> 4 #define maxn 105 5 using namespace std; 6 int a[maxn][maxn],dp[maxn]; 7 int n,m; 8 9 int main(){ 10 while(~scanf("%d%d"…

背包问题 01背包 状态:f(i,j) 表示只能装前i个物品的情况下,容量为j的背包所能达到的最大总价值 状态转移方程:  f(i,j)=max(f(i-1,j),f(i-1,j-w[i])+v[i]) 核心代码(滚动数组) 由于我们使用一维数组存储,则在求两个子问题时没有直接取出那么方便了,因为第i次循环可能覆盖第i-1次循环的结果 “相反,如果在执行第 i 次循环时,背包容量按照0..V的顺序遍历一遍,来检测第 i 件物品是否能放.此时在执行第i次循环 且 背包容量为v时,此时的f[v]存储…

ACboy needs your help Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 4491    Accepted Submission(s): 2403 Problem Description ACboy has N courses this term, and he plans to spend at most M day…

ACboy needs your help Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 5022    Accepted Submission(s): 2714 Problem Description ACboy has N courses this term, and he plans to spend at most M days…

题意:有n个任务,完成期限是m天,a[i][j]代表第i个任务用j天完成可以获得的利益,问在这m天里面可以获得的最大利益,每次只能做一个任务,即多个任务不能同时做; 分析;用dp[i][j]代表在做第i个任务的时候j天获得的最大利益; #include"stdio.h" #include"string.h" #include"stdlib.h" #include"algorithm" #include"math.h&…

将背包九讲往后看了看,学习了一下分组背包.来做几道入门题,试试手. #include <iostream> #include <cstring> #include <cstdlib> #include <cstdio> #include <cmath> #include <cctype> #include <algorithm> #include <numeric> #include <limits.h&…

题目:http://acm.hdu.edu.cn/showproblem.php?pid=1712 解释看这里:http://www.cnblogs.com/zhangmingcheng/p/3940332.html 这题之前竟然做过,竟然不记得了,做了一个小时,竟然没A,(我连分组背包干什么的都忘了) 这题的博客以前也写过,我重新写这篇博客,就是提醒自己一下. 代码: #include <iostream> using namespace std; ][],f[]; int main() {…

ACboy needs your help Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 5963    Accepted Submission(s): 3250 Problem Description ACboy has N courses this term, and he plans to spend at most M days…

题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=1702 ACboy needs your help again! Description ACboy was kidnapped!! he miss his mother very much and is very scare now.You can't image how dark the room he was put into is, so poor :(.As a smart ACMer, y…

题目: ACboy needs your help again! Time Limit: 1000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 73 Accepted Submission(s): 57   Problem Description ACboy was kidnapped!! he miss his mother very much and is very…

ACboy needs your help Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 2793    Accepted Submission(s): 1441 Problem Description ACboy has N courses this term, and he plans to spend at most M day…

转载请注明出处:http://blog.csdn.net/u012860063 题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1712 Problem Description ACboy has N courses this term, and he plans to spend at most M days on study.Of course,the profit he will gain from different course depen…

ACboy needs your help again! Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 4241    Accepted Submission(s): 2164 Problem Description ACboy was kidnapped!! he miss his mother very much and is ve…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1712 ACboy needs your help Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3045    Accepted Submission(s): 1581 Problem Description ACboy has N cou…

ACboy needs your help Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 5872    Accepted Submission(s): 3196 Problem Description ACboy has N courses this term, and he plans to spend at most M days…

ACboy needs your help again! Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 4429    Accepted Submission(s): 2260 Problem Description ACboy was kidnapped!! he miss his mother very much and is ve…

HDU 1712 ACboy needs your help(包背包) pid=1712">http://acm.hdu.edu.cn/showproblem.php? pid=1712 题意: 小杰有m天的时间去上n门不同的课. 对于第i门课来说, 假设小杰花j天的时间在该课上, 那么小杰能够获得val[i][j]的价值. 如今给出矩阵val[n][m], 要你求出小杰能获得的最大价值和? 分析: 咋一看, n门课, m天的时间, 要我们求最大价值. 那么明显是从n门课中选出合适的几门,…

Description ACboy has N courses this term, and he plans to spend at most M days on study.Of course,the profit he will gain from different course depending on the days he spend on it.How to arrange the M days for the N courses to maximize the profit? …

B - ACboy needs your help Time Limit:1000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Submit Status Description ACboy has N courses this term, and he plans to spend at most M days on study.Of course,the profit he will gain from diffe…

ACboy needs your help again! Time Limit : 1000/1000ms (Java/Other)   Memory Limit : 32768/32768K (Java/Other) Total Submission(s) : 36   Accepted Submission(s) : 29 Font: Times New Roman | Verdana | Georgia Font Size: ← → Problem Description ACboy wa…

Description ACboy was kidnapped!! he miss his mother very much and is very scare now.You can't image how dark the room he was put into is, so poor :(. As a smart ACMer, you want to get ACboy out of the monster's labyrinth.But when you arrive at the g…

ACboy was kidnapped!! he miss his mother very much and is very scare now.You can't image how dark the room he was put into is, so poor :(. As a smart ACMer, you want to get ACboy out of the monster's labyrinth.But when you arrive at the gate of the m…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1712 第一次接触分组背包,参考博客:https://blog.csdn.net/yu121380/article/details/81387879 什么都要自己写一遍. 对于k组物品,每个物品都有一个需要花费的容量值和一个价值,并且对于同一组里面的物品最多只可以拿一个,现在有m个单位的容量,问在不超出最大容量的情况下可以得到的最大的价值. 思路:我们声明一个二维数组,dp[k][j]表示前k组花费j…

ACboy needs your help again! Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 10095    Accepted Submission(s): 5066 Problem Description ACboy was kidnapped!! he miss his mother very much and is v…

ACboy needs your help Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 3282    Accepted Submission(s): 1703 Problem Description ACboy has N courses this term, and he plans to spend at most M day…