HDU 2602 Bone Collector （简单01背包）

Bone Collector

http://acm.hdu.edu.cn/showproblem.php?pid=2602

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 ?

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.

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

解题代码：

#include <stdio.h>
#include <math.h>
#include <string.h>
#include <iostream>
using namespace std;

const int max_v = ;
int dp[max_v];
struct boot
{
    int val, cost;
};

int main()
{
    int T;
    scanf ("%d", &T);
    int N, V;
    boot B[max_v];
    while (T--)
    {
        memset (dp, , sizeof (dp));
        scanf ("%d%d", &N, &V);
        for (int i = ; i <= N; i ++)
            scanf ("%d", &B[i].val);
        for (int i = ; i <= N; i ++)
            scanf ("%d", &B[i].cost);
        for (int i = ; i <= N; i ++)
        {
            for (int v = V; v >= B[i].cost; v --)
                dp[v] = max(dp[v], dp[v-B[i].cost] + B[i].val);
        }
        printf ("%d\n", dp[V]);
    }
    return ;
}