hdu2191 题目太长不打了orz(多重背包)

第一次见这么长的题目……
多重背包,可以说背包九讲的模版题。

#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <algorithm>
using namespace std;
int v;
int dp[105],p[105],h[105],c[105];

void ZeroOnePack(int cost,int weight)
{
    for(int i=v;i>=cost;i--)
        dp[i]=max(dp[i],dp[i-cost]+weight);
}

void CompletePack(int cost,int weight)
{
    for(int i=cost;i<=v;i++)
        dp[i]=max(dp[i],dp[i-cost]+weight);
}

void MultipliesPack(int cost,int weight,int amount)
{
    if(cost*amount>=v)CompletePack(cost,weight);
    else
    {
        for(int k=1;k<amount;)
        {
            ZeroOnePack(k*cost,k*weight);
            amount-=k;
            k<<=1;
        }
        ZeroOnePack(amount*cost,amount*weight);
    }
}

int main()
{
    int t,m;
    scanf("%d",&t);
    while(t--)
    {
        memset(dp,0,sizeof(dp));
        scanf("%d%d",&v,&m);
        for(int i=1;i<=m;i++)
        {
            scanf("%d%d%d",&p[i],&h[i],&c[i]);
            MultipliesPack(p[i],h[i],c[i]);
        }
        printf("%d\n",dp[v]);
    }
    return 0;
}

你可能感兴趣的:(hdu2191 题目太长不打了orz(多重背包))