#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,a[200],s=0;
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>a[i];
		s=s+a[i];
	}
	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]);
		} 
	}
    float v=s*1.0/n;
    cout<<s<<endl;
    printf("%.2f\n",v);
    for(int i=1;i<=n;i++) cout<<a[i]<<" ";
	return 0;
}

/**************************************************************
	Problem: 1175
	User: dengyuanyan
	Language: C++
	Result: Accepted
	Time:12 ms
	Memory:2076 kb
****************************************************************/