hdu 2602 Bone Collector(dp46)
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Bone Collector
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 53210 Accepted Submission(s): 22383
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题目大意:有一个收集骨头的人,有一个V容量的包裹,他想要尽可能收集总价值最大的骨头,问你最多能收藏价值多少的骨头。题目分析:这是一个比较典型的01背包问题,需要注意的是数要用long long型。然后,,,好像就没有然后了。贴代码,哦对了,那个状态转移方程是dp【j】=max{dp【j-a【i】】+b【i】,dp【j】};嗯,就是这样。#include <cstdio>#include <cstring>#include <iostream>#include <algorithm>#include <cmath>using namespace std;#define maxn 1005long long dp[maxn],a[maxn],b[maxn];int main(){int n,m,t;while(~(scanf("%d",&t))){while(t--){memset(dp,0,sizeof(dp));scanf("%d%d",&n,&m);for(int i=0;i<n;i++) scanf("%I64d",&b[i]);for(int i=0;i<n;i++) scanf("%I64d",&a[i]);for(int i=0;i<n;i++) for(int j=m;j>=a[i];j--){ dp[j]=max(dp[j-a[i]]+b[i],dp[j]); }printf("%lld\n",dp[m]);}}return 0;}
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