#include<bits/stdc++.h>
using namespace std;
int main(){
  int i,n,j,x=0;
  int a[100]={0};
  float s=0;
  cin>>n;
  for(i=0;i<n;i++) cin>>a[i];
  for(i=0;i<n;i++)
  x=(x+a[i]);
  s=x*1.00/n;
  cout<<x<<endl;
  printf("%.2f\n",s);
  for(i=1;i<n;i++){
  	for(j=1;j<=n-i;j++){
  		if(a[j-1]<a[j]) swap(a[j-1],a[j]);
	  }
  	 }	
  for(i=0;i<n;i++){
  cout<<a[i]<<" ";
  }	
  return 0;
}
/**************************************************************
	Problem: 1175
	User: wtq001
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2076 kb
****************************************************************/