#include<bits/stdc++.h>
using namespace std;
int main(){
    int n,a[200],v=0;
    float z;
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>a[i];
        v=v+a[i];
    }
    for(int i=1;i<n;i++){
    for(int j=1;j<=n-i;j++){
        if(a[j]<a[j+1])  swap(a[j],a[j+1]);
        }
    }
    z=v*1.0/n;
    cout<<v<<endl;
    printf("%.2f\n",z);
    for(int i=1;i<=n;i++){
        cout<<a[i]<<" ";}
    return 0;
}
/**************************************************************
	Problem: 1175
	User: lidongbo
	Language: C++
	Result: Accepted
	Time:6 ms
	Memory:2076 kb
****************************************************************/