#include <bits/stdc++.h>
using namespace std;
int main(){
	int n,a[100],i,j;
	float h;
	cin>>n;
	for(i=0;i<n;i++){
		cin>>a[i];
	}
	for(i=0;i<n;i++){
		h=h+a[i];
	}
	cout<<h<<endl;
	h=h/n;
	printf("%.2f\n",h);
	for(i=n-1;i>=1;i--){
		for(j=0;j<i;j++){
			if(a[j]<a[j+1]){
				swap(a[j],a[j+1]);
			}
		} 
	}
	for(i=0;i<n;i++){
		cout<<a[i]<<" ";
	}
}

/**************************************************************
	Problem: 1175
	User: linyuhang
	Language: C++
	Result: Accepted
	Time:9 ms
	Memory:2076 kb
****************************************************************/