#include<iostream>
using namespace std;
int main()
{
	int n,s,sum,ave,max,min,i;
	while(cin>>n)
	{
		if(n==0)
			break;
		cin>>s;
		sum=max=min=s;
		for(i=1;i<n;i++)
		{
			cin>>s;
			sum+=s;
			if(max<s)
				max=s;
			else if(min>s)
				min=s;
		}
		ave=(sum-max-min)/(n-2);
		cout<<ave<<endl;
	}
	return 0;
}

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