#include <iostream>
#include <fstream>

using namespace std;

int n,i,j,k,l;
int p[101],r[101],d[101];
int a[101];
bool b[101];
int minhold;

void go(int x);

int main()
{
	ifstream fin("preparation.in");
	ofstream fout("preparation.out");
	
	fin>>n;
	while (n!=0)
	{
		for (i=1;i<=n;i++)
			fin>>p[i];
		for (i=1;i<=n;i++)
			fin>>r[i];
		for (i=1;i<=n;i++)
			fin>>d[i];
		for (i=1;i<=n;i++)
			b[i]=false;
		minhold=99999999;
		
		go(1);
		
		fout<<minhold<<endl;
		fin>>n;
	}
		
	fin.close();
	fout.close();
	
	return 0;
}

void go(int x)
{
	int i,j,k,l;
	if (x==n+1)
	{
		l=0;
		k=0;
		for (i=1;i<=n;i++)
		{
			if (r[a[i]]>l)
				l=r[a[i]];
			l=l+p[a[i]];
			j=l-d[a[i]];
			if (j>k)
				k=j;
		}
		if (k<minhold)
			minhold=k;
	}
	else
	{
		for (i=1;i<=n;i++)
			if (!b[i])
			{
				a[x]=i;
				b[i]=true;
				go(x+1);
				b[i]=false;
				a[x]=0;
			}
		
	}
}