#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,a[160]={0},i,w;
	float p=0,z=0;
	cin>>n;
	for(i=0;i<n;i++){
		cin>>a[i];
		z=z+a[i];
	}
	cout<<z<<endl;
	p=z/n;
	printf("%.2f",p);
	w=0;
	cout<<endl;
	for(i=0;i<n;i++){
		if(a[w]<a[w+1]){
			swap(a[w],a[w+1]);
			w=w+1;
		}
	}
	for(i=0;i<n;i++){
		cout<<a[i]<<" "; 
	}
}
/**************************************************************
	Problem: 1175
	User: huxuanchen
	Language: C++
	Result: Wrong Answer
****************************************************************/