#include<bits/stdc++.h>
using namespace std;
int main(){
	int i,j,n,a[155]={ };
	float h=0,x;
	cin>>n;
	for(i=0;i<n;i++){
		cin>>a[i];
		h=h+a[i];
	}
	x=h/n;
	for(i=1;i<n;i++){
		for(j=0;j<n-i;j++){
			if(a[j]<a[j+1]){
				swap(a[j],a[j+1]);
			}
		}
	}
	cout<<h<<endl;
	printf("%.2f",x);
	cout<<endl;
	for(i=0;i<n;i++){
		cout<<a[i]<<" ";
	}
	return 0;
}

/**************************************************************
	Problem: 1175
	User: zengyixuan
	Language: C++
	Result: Accepted
	Time:7 ms
	Memory:2076 kb
****************************************************************/