#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,i,a[155],j=0;
	float w;
	cin>>n;
	for(i=0;i<n;i++){
	    cin>>a[i];
		j=a[i]+j;	
	}
	cout<<j<<endl;
	w=j*1.00/n;
	printf("%.2f",w);
	cout<<endl;
	for(i=n-1;i>0;i--){
		for(j=0;j<i;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: lijinkai
	Language: C++
	Result: Accepted
	Time:7 ms
	Memory:2076 kb
****************************************************************/