#include<bits/stdc++.h>
using namespace std;
int main()
{
	int a[15];
	int n,s=0;
	float m=0;
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>a[i];
		s+=a[i];
	
	} 
m=s*1.00/n;
  for(int i=1;i<=n-1;i++){
        for(int j=1;j<=n-i;j++){
            if(a[j]<a[j+1]){
                swap(a[j],a[j+1]);
            }
        }
    }
    	cout<<s<<endl;
    	printf("%.2f",m );
    	cout<<endl;
	for(int i=1;i<=n;i++){
		cout<<a[i]<<" ";
}

	return 0;
}

/**************************************************************
	Problem: 1175
	User: hbq
	Language: C
	Result: Compile Error
****************************************************************/