#include<iostream>
#include<cstdio>
#include<iomanip>
using namespace std;
int main()
{
	freopen("stats.in","r",stdin);      
    freopen("stats.out","w",stdout);  
	int n,t=0;
	double zws,s=0;
	cin>>n;
	int a[501];
	for(int i=1;i<=n;i++)
	{	
		cin>>a[i];
		s+=a[i];
	}
	cout<<setprecision(6)<<std::fixed<<s/n<<endl;
	for(int i=1;i<=n;i++)
		for(int j=1;j<=n-i;j++)
			if(a[j]>a[j+1])
			{
				t=a[j];
				a[j]=a[j+1];
				a[j+1]=t;
			}
	if(n%2!=0)
		zws=a[n/2+1];
	else
		zws=(a[n/2]+a[n/2+1])/2;
	cout<<setiosflags(ios::fixed)<<setprecision(6)<<zws;
	return 0;
}