#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: linyuhang
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2076 kb
****************************************************************/