Bone Collector
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 24147 Accepted Submission(s): 9798
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
1 5 10 1 2 3 4 5 5 4 3 2 1
Sample Output
14
Author
Teddy
做的第一个背包题,个人感觉理解背包类问题解题方法(动态规划)是解题正确的关键
感觉此类问题与递推有较大的联系。一点拙见,不对之处请各位多多指教。代码如下:
#include<stdio.h> #include<string.h> int bone[1001]; struct sa { int W,V; }data[1001]; int max(int a,int b) { return a>b?a:b; } int main() { int t,i,j; while(scanf("%d",&t)!=EOF) { while(t--) { memset(bone,0,sizeof(bone)); int n,v; scanf("%d%d",&n,&v); for(i=1;i<=n;i++) scanf("%d",&data[i].W); for(j=1;j<=n;j++) scanf("%d",&data[j].V); for(i=1;i<=n;i++) for(j=v;j>=data[i].V;j--) { bone[j]=max(bone[j],bone[j-data[i].V]+data[i].W); } printf("%d\n",bone[v]); } } return 0; }