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没辙了!帮忙看一下算法

Posted by baipf at 2005-08-15 13:48:18 on Problem 1011
#include<stdio.h>
#include<malloc.h>

void quickSort(int *n);
int isFill(int lenth,int total);
int N;
int p=0;
int *num;
int sum=0;

int main()
{
	int i,max;

	scanf("%d",&N);
	
	while(N>0)
	{
		sum=0;
		num=(int *)malloc(N*sizeof(int));
	for(i=0;i<N;i++)
	{
		scanf("%d",&num[i]);
		sum=sum+num[i];
	}
	quickSort(num);

	max=num[0];
    for(i=max;i<=sum;i++)
	{
        if(sum%i==0)
		{
			if(isFill(i,sum/i))
			{
				printf("%d\n",i);
				break;
			}
		}
	}
    free(num);
	scanf("%d",&N);
	}

	return 0;
}

void quickSort(int n[])
{
	int i,j;
	int temp;
	for(i=0;i<N;i++)
		for(j=i;j<N;j++)
		{
             if(n[i]<n[j])
			 {
				 temp=n[i];
				 n[i]=n[j];
				 n[j]=temp;
			 }
		}
}
int isFill(int lenth,int total)
{
    int i,j,flag=0;
	int *str;
	str=(int *)malloc(total*sizeof(int));
	for(i=0;i<total;i++)
	{
		str[i]=lenth;
	}
	for(i=0;i<N;i++)
	{
		flag=0;
		for(j=0;j<total;j++)
		{
			if(str[j]-num[i]>=0)
			{
				flag=1;
                str[j]=str[j]-num[i];
				break;
			}
		}
		if(flag==0) 
		{
            free(str);
			return 0;
		}
	}
    free(str);
	return 1;
}


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