#include<bits/stdc++.h>
using namespace std;
int main(){
  int i,n,h=0,a[155]={0},j;
  float p=0;
  cin>>n;
  for(i=0;i<n;i++){
  	cin>>a[i];
  	h=h+a[i];
  }
		p=h*1.0/n;
		cout<<h<<endl;
  		printf("%.2f\n",p);
  		for(i=n-1;i>0;i--){
  			for(j=0;j<n-1;j++){
  				if(a[j]<a[j+1]){
  					swap(a[j],a[j+1]);
  				}
  			}	
  		}
  		for(i=0;i<n;i++){
  			cout<<a[i]<<" ";
  		}	
  	     	return 0;
}


/**************************************************************
	Problem: 1175
	User: linweilun
	Language: C++
	Result: Accepted
	Time:6 ms
	Memory:2076 kb
****************************************************************/