HDU - 2602 Bone Collector(01背包)
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Many years ago , in Teddy’s hometown there was a man who was called “Bone Collector”. This man like to collect varies of bones , such as dog’s , cow’s , also he went to the grave …
The bone collector had a big bag with a volume of V ,and along his trip of collecting there are a lot of bones , obviously , different bone has different value and different volume, now given the each bone’s value along his trip , can you calculate out the maximum of the total value the bone collector can get ?
![](http://acm.hdu.edu.cn/data/images/C154-1003-1.jpg)
The bone collector had a big bag with a volume of V ,and along his trip of collecting there are a lot of bones , obviously , different bone has different value and different volume, now given the each bone’s value along his trip , can you calculate out the maximum of the total value the bone collector can get ?
![](http://acm.hdu.edu.cn/data/images/C154-1003-1.jpg)
Input
The first line contain a integer T , the number of cases.
Followed by T cases , each case three lines , the first line contain two integer N , V, (N <= 1000 , V <= 1000 )representing the number of bones and the volume of his bag. And the second line contain N integers representing the value of each bone. The third line contain N integers representing the volume of each bone.
Followed by T cases , each case three lines , the first line contain two integer N , V, (N <= 1000 , V <= 1000 )representing the number of bones and the volume of his bag. And the second line contain N integers representing the value of each bone. The third line contain N integers representing the volume of each bone.
Output
One integer per line representing the maximum of the total value (this number will be less than 2 31).
Sample Input
15 101 2 3 4 55 4 3 2 1
Sample Output
14
题解:直接就是01背包,把前i个物品装到容器量为j的背包中的最大总重量
f(i,j) = max(f(i-1,j),f(i-1,j-v[i])+w[i])
N为数量,V为最大的体积
最终答案为f(N,V);
#include <iostream>#include <cstdio>using namespace std;int N,V;int v[1005];int w[1005];int dp[1005][1005];int main(){ int t; scanf("%d",&t); while(t--){ scanf("%d%d",&N,&V); for(int i = 1; i <= N; i++)scanf("%d",&w[i]); for(int i = 1; i <= N; i++)scanf("%d",&v[i]); for(int i = 1; i <= N; i++) for(int j = 0; j <= V; j++){ dp[i][j] = (i==1? 0 : dp[i-1][j]); if(j >= v[i]) dp[i][j] = max(dp[i][j],dp[i-1][j-v[i]]+w[i]); } printf("%d\n",dp[N][V]); }}
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