#include <iostream>
#include <algorithm>
#include <climits>
using namespace std;
const int N = 10010;
int a[N];
int n;
int main()
{
scanf("%d", &n);
int MAX = INT_MIN, MIN = INT_MAX; //取最大最小值
double sum = 0;
for (int i = 0; i < n; i ++ )
{
scanf("%d", &a[i]);
MAX = max(MAX, a[i]); //求最大值
MIN = min(MIN, a[i]); //求最小值
sum += a[i]; //求所有数的和
}
double avg = 0; //平均数
avg = sum / n;
printf("%d\n%d\n%.2lf", MAX, MIN, avg);
return 0;
}