#include<bits/stdc++.h>
using namespace std;
int n;
int a[1000001];
int maxx=-1,minn=101;
int zhong;
int main(){
	cin>>n;
	for(int i=1;i<=n;i++){
	    cin>>a[i];
	    maxx=max(maxx,a[i]);
	    minn=min(minn,a[i]);
	    zhong+=a[i];
	}
	cout<<maxx<<endl<<minn<<endl;
    cout<<fixed<<setprecision(2<<zhong/n*1.0;  
	
	return 0;
}