#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,i,a[200]={0},j,d;
	float h=0;
	cin>>n;
	for(i=0;i<n;i++){
		cin>>a[i];
		h=h+a[i];
	}
	cout<<h<<endl;
	h=h/n;
	printf("%.2f",h);
	cout<<endl;
	for(i=n-1;i>0;i--){
		for(j=0;j<n-1;j++){
			if(a[j]<a[j+1]){
				d=a[j];
				a[j]=a[j+1];
				a[j+1]=d;
			}
		}
	}
	for(i=0;i<n;i++){
		cout<<a[i]<<" ";
	}
}
/**************************************************************
	Problem: 1175
	User: lvrenxiang
	Language: C++
	Result: Accepted
	Time:7 ms
	Memory:2076 kb
****************************************************************/