hdu 1059 Dividing(完全背包)

/* ***********************************************
Author        :xryz
Email         :xiang578@foxmail.com
Created Time  :2015/7/16 8:29:33
File Name     :C:UsersAdministratorDesktop001.cpp
************************************************ */

#include <stdio.h>
#include <string.h>
#include <iostream>
#include <algorithm>
#include <vector>
#include <queue>
#include <set>
#include <map>
#include <string>
#include <math.h>
#include <stdlib.h>
#include <time.h>
using namespace std;

int sum,v,dp[50000];

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 multiplepack(int cost ,int weight,int amount)
{
    if(cost*amount>=v)
    {
        completepack(cost,weight);
    }
    else
    {
        int k=1;
        while(k<amount)
        {
            zeroonepack(cost*k,weight*k);
            amount-=k;
            k*=2;
        }
        zeroonepack(cost*amount,weight*amount);
    }
}
int main()
{
    //freopen("in.txt","r",stdin);
    //freopen("out.txt","w",stdout);
    int _=0,a[10],i;
    while(~scanf("%d%d%d%d%d%d",&a[1],&a[2],&a[3],&a[4],&a[5],&a[6]))
    {
        if(a[1]==0&&a[2]==0&&a[3]==0&&a[4]==0&&a[5]==0&&a[6]==0) break;
        sum=0;
        for(i=1; i<=6; i++)
            sum+=i*a[i];
        v=sum/2;
        memset(dp,0,sizeof(dp));
        for(i=1; i<=6; i++)
        {
            multiplepack(i,i,a[i]);
        }
        printf("Collection #%d:
",++_);
        if(sum==2*dp[v])
            printf("Can be divided.

");
        else
            printf("Can't be divided.

");
    }
    return 0;
}