hdu1712ACboy needs your help(分组背包)
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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 arrange the M days for the N courses to maximize the profit?
Input
The input consists of multiple data sets. A data set starts with a line containing two positive integers N and M, N is the number of courses, M is the days ACboy has.
Next follow a matrix A[i][j], (1<=i<=N<=100,1<=j<=M<=100).A[i][j] indicates if ACboy spend j days on ith course he will get profit of value A[i][j].
N = 0 and M = 0 ends the input.
Next follow a matrix A[i][j], (1<=i<=N<=100,1<=j<=M<=100).A[i][j] indicates if ACboy spend j days on ith course he will get profit of value A[i][j].
N = 0 and M = 0 ends the input.
Output
For each data set, your program should output a line which contains the number of the max profit ACboy will gain.
Sample Input
2 21 21 32 22 12 12 33 2 13 2 10 0
Sample Output
346题意:有n个课程,现在花M天来学习这些课程,学习每个课程花的天数所得到的价值不同,求M天怎么分配学习才能得到的价值最大。输入时是一个n*M的矩阵A[i][j]。#include<stdio.h>int a[105][105],dp[105],M;void fenzupack(int i){ for(int m=M;m>0;m--) for(int j=1;j<=m;j++) if(dp[m]<dp[m-j]+a[i][j]) dp[m]=dp[m-j]+a[i][j];}int main(){ int n; while(scanf("%d%d",&n,&M)>0&&n+M!=0) { for(int i=1;i<=n;i++) for(int j=1;j<=M;j++) scanf("%d",&a[i][j]); for(int j=0;j<=M;j++) dp[j]=0; for(int i=1;i<=n;i++) fenzupack(i); printf("%d\n",dp[M]); }}
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