#include<bits/stdc++.h>
using namespace std;
int main(){
    int a[15];
    int n,s=0;
    float m=0;
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>a[i];
        s+=a[i];
     
    } 
m=s*1.00/n;
  for(int i=1;i<=n-1;i++){
        for(int j=1;j<=n-i;j++){
            if(a[j]<a[j+1]){
                swap(a[j],a[j+1]);
            }
        }
    }
        cout<<s<<endl;
        printf("%.2f",m );
        cout<<endl;
    for(int i=1;i<=n;i++){
        cout<<a[i]<<" ";
}
 
    return 0;
}
/**************************************************************
	Problem: 1175
	User: lijinkai
	Language: C++
	Result: Accepted
	Time:6 ms
	Memory:2076 kb
****************************************************************/