import java.lang.reflect.Array;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Scanner;

public class AvgStandardDeviation
{
  public static void main(String[] args)
  {
    Scanner in = new Scanner(System.in);
    System.out.println("Моля въведи брой състезатели");
    int numberOfContestants = in.nextInt();
    System.out.println("Моля въведи поотделно времената на спринтиране на състезателите");
    ArrayList<Double> timesOfContestants = new ArrayList<>();

    int sum = 0;
    double avg;
    for (int i = 0; i < numberOfContestants ; i++) {
      timesOfContestants.add(in.nextDouble());
      Collections.sort(timesOfContestants);
      sum += timesOfContestants.get(i);
    }
    avg = sum/timesOfContestants.size();
    double squaredDifference;
    double standardDeviation;
    double sumSquaredDifference = 0;

    for (double time: timesOfContestants
         ) {
      squaredDifference = Math.pow((time-avg), 2);
      sumSquaredDifference +=squaredDifference;
    }
    standardDeviation = Math.sqrt(sumSquaredDifference/timesOfContestants.size());
    System.out.println(timesOfContestants);
    System.out.println("Най-бърз"+ ": " + timesOfContestants.get(0));
    System.out.println("Най-бавен"+ ": " + timesOfContestants.get(timesOfContestants.size() -1));
    System.out.println("Avg"+ ": " + avg);
    System.out.println("standardDeviation = " + standardDeviation);

  }
}