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

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