void main()
{
	int l1,l2,t1,t2,temp,i,j,n;
         long sum;
	int a[2000],b[2000];
	scanf("%d",&n);
	while (n>0)
	{
		sum=0;
		l1=1;l2=n;t1=1;t2=n;
		for (i=1;i<=n;i++)
			scanf("%d",&a[i]);
		for (i=1;i<n;i++)
			for (j=i+1;j<=n;j++)
				if (a[i]<a[j])
				{temp=a[i];a[i]=a[j];a[j]=temp;}
		for (i=1;i<=n;i++)
			scanf("%d",&b[i]);
		for (i=1;i<n;i++)
			for (j=i+1;j<=n;j++)
				if (b[i]<b[j])
				{temp=b[i];b[i]=b[j];b[j]=temp;}
		while (l1<=l2)
		{
			if (a[l1]>b[t1])
			{ 
			    sum=sum+200;
			    l1++;t1++;
			}
			else
			{
			    if (a[l2]>b[t2])
				{
					sum=sum+200;
					l2--;t2--;
				}
				else
				{
					if (a[l2]>b[t1]) sum=sum+200;
					if (a[l2]<b[t1]) sum=sum-200;
					l2--;t1++;
				}
					
			}
		}
		printf("%d\n",sum);
		scanf("%d",&n);
	}
}

