#include<bits/stdc++.h>
using namespace std;
int main(){
    int a[160]={0},n,i,h=1,j=0;
    float l;
    cin>>n;
    for(i=0;i<n;i++){
    	cin>>a[i];
    }
    for(h=1;h<n;h++){
    	for(i=0;i<n-h;i++){
    		if(a[i]<a[i+1]){
    			swap(a[i],a[i+1]);
    		}
    	}
    }
    for(i=0;i<n;i++){
    	j=j+a[i];
    }
    l=1.00*j/n;
    cout<<j<<endl;
    printf("%.2f\n",l);
    for(i=0;i<n;i++){
    	cout<<a[i]<<" ";
    }
}
/**************************************************************
	Problem: 1175
	User: huanghengyi
	Language: C++
	Result: Accepted
	Time:9 ms
	Memory:2076 kb
****************************************************************/