#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,i,j,h=0;
	float p;
	cin>>n;
	int a[n];
	for(i=0;i<n;i++){
		cin>>a[i];
		h+=a[i];
	}
	for(i=1;i<=n-1;i++){
		for(j=0;j<n-i;j++){
			if(a[j]<a[j+1]){
				swap(a[j],a[j+1]);
			}
		}
	}
	p=h*1.0/n;
	
	
	


	cout<<h<<endl;
	printf("%.2f\n",p);
	for(i=0;i<n;i++){
		cout<<a[i]<<" ";
	}
	
	return 0;
}

/**************************************************************
	Problem: 1175
	User: tangkaixuan
	Language: C++
	Result: Accepted
	Time:19 ms
	Memory:2076 kb
****************************************************************/