#include<stdio.h>
#include<string.h>
#include<algorithm>
#define MAX 1010
#define max(x,y)(x>y?x:y)
using namespace std;
bool cmp(int a,int b)
{
	return a<b;
}
int s[MAX],dp[MAX];
int main()
{
	int n,m,j,i,k,t,sum;
	while(scanf("%d",&n),n)
	{
		for(i=0;i<n;i++)
		scanf("%d",&s[i]);
		scanf("%d",&m);
		if(m<5)
		{
			printf("%d\n",m);
			continue;
		}
		memset(dp,0,sizeof(dp));
		sum=m-5;
		sort(s,s+n);
		for(i=0;i<n-1;i++)
		{
			for(j=sum;j>=s[i];j--)
			{
				dp[j]=max(dp[j],dp[j-s[i]]+s[i]);
			}
		}
		printf("%d\n",m-dp[sum]-s[n-1]);
	}
	return 0;
}