#include <iostream>
using namespace std;

int main()
{
  int n,sum=0;
  cin>>n;
  int min1=100,max1=0,m=n;
  while(n--)
  {
    int x;
    cin>>x;
    sum+=x;//计算成绩的和
    if(x>max1) max1=x;//找最大值
    if(x<min1) min1=x;//找最小值
  }

  cout<<max1<<endl<<min1<<endl;
  printf("%.2f\n",(double)(sum*1.0/m));

  return 0;
}