#include<bits/stdc++.h>
using namespace std;
int a[155],n,i,h,j;
float q;
int main(){
	cin>>n;
	for(i=0;i<n;i++){
		cin>>a[i];
		h+=a[i];
	}
	q=h*1.00/n;
	cout<<h<<endl;;
	printf("%.2f",q);
	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: zhangziang
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2076 kb
****************************************************************/