#include <bits/stdc++.h>
using namespace std;
int main()
{
	int n,j,i,a[151],b=0;
	float p;
	cin>>n;
	for(i=0;i<n;i++)
	{
		cin>>a[i];
		b=a[i]+b;
	}
	p=b*1.0/n;
	for(i=0;i<=n-2;i++)
	{
		for(j=i+1;j<=n-1;j++)	
		if(a[j]>a[i]) swap(a[j],a[i]);
	}
	cout<<b<<endl;
	printf("%.2f\n",p);
	for(i=0;i<n;i++)
	{
		
		cout<<a[i]<<" ";
	}
	
	
	
	return 0;
}

/**************************************************************
	Problem: 1175
	User: 21A
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2076 kb
****************************************************************/