#include<iostream>
#include<cstdio>
#include<algorithm>
#include<iomanip>
using namespace std;
int main(){
	freopen("stats.in","r",stdin);
	freopen("stats.out","w",stdout);
	int n,a[20000],i,d;
	double sum,m,b;
	sum=0;
	cin>>n;
	if(n<1||n>500)return 0;
	for(i=0;i<n;i++){
		cin>>a[i];
		sum=sum+a[i];
	}
	sum=sum/n;
	cout<<setiosflags(ios::fixed)<<setprecision(6)<<sum<<endl;
	sort(a,a+n);
	if(n%2!=0){
			i=n/2;
			m=a[i];
			cout<<setiosflags(ios::fixed)<<setprecision(6)<<m<<endl;
		}else{
			i=n/2-1;
			d=i+1;
			b=(a[d]+a[i])/2;
			cout<<setiosflags(ios::fixed)<<setprecision(6)<<b<<endl;
		}
	return 0;
}