Hdu 2602 Bone Collector(简单01背包)
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Bone Collector
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 54964 Accepted Submission(s): 22985
Problem Description
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 ?
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 ?
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 231).
Sample Input
15 101 2 3 4 55 4 3 2 1
Sample Output
14
Author
Teddy
Source
HDU 1st “Vegetable-Birds Cup” Programming Open Contest
题目分析:简单的01背包,用DP【i】表示当前背包里面还剩下的容量,用一维数组解可能好一点。不懂得请参考背包九讲。
代码如下:
#include<iostream>#include<cstring>#include<algorithm>const int maxx=1000+50;using namespace std;int dp[maxx],val[maxx],vo[maxx];int main(){int t;cin>>t;int N,V;while(t--){ cin>>N>>V; memset(dp,0,sizeof(dp)); for(int i=0;i<N;i++)cin>>val[i]; for(int j=0;j<N;j++)cin>>vo[j]; for(int i=0;i<N;i++) { for(int j=V;j>=vo[i];j--) { dp[j]=max(dp[j],dp[j-vo[i]]+val[i]); } }cout<<dp[V]<<endl;}return 0;}
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