import java.io.*;
import java.util.*;

public class Numbers {

    public static void main (String [] args) throws FileNotFoundException {
        Scanner input = openFile();

        double max = Double.MIN_VALUE;
        double min = Double.MAX_VALUE;
        double sum = 0;
        double count = 0;

        while (input.hasNext()) {
            if (input.hasNextDouble()) {
                count++;
                double num = input.nextDouble();
                if (num > max)
                    max = num;
                if (num < min)
                    min = num;
                sum += num;
            } else {
                input.next();
            }
        }


        System.out.println("Maximum: " + max);
        System.out.println("Minimum: " + min);
        System.out.println("Sum: " + sum);
        System.out.println("Average: " + (sum/count));

    }

    public static Scanner openFile() throws FileNotFoundException {
        System.out.print("Enter file name: ");
        Scanner input = new Scanner(System.in);
        String fileName = input.nextLine();
        File inFile = new File(fileName);
        while (!inFile.exists()) {
           System.out.println(fileName + " not found.");
           System.out.print("Enter file name: ");
           fileName = input.nextLine();
           inFile = new File(fileName);
    }
        return new Scanner(inFile);
    }

}