import java.util.Scanner;
 
public class Avg1
{
   public static void main(String[] args)
   {
      Scanner in = new Scanner(System.in);
 
      double a, b, c, d, e;    // Hold 5 numbers
      double avg;

      System.out.print("Enter a number: ");
      a = in.nextDouble();            // Read in number

      System.out.print("Enter a number: ");
      b = in.nextDouble();            // Read in number

      System.out.print("Enter a number: ");
      c = in.nextDouble();            // Read in number

      System.out.print("Enter a number: ");
      d = in.nextDouble();            // Read in number

      System.out.print("Enter a number: ");
      e = in.nextDouble();            // Read in number
      
      avg = (a + b + c + d + e)/5;
      System.out.println(avg);        // Print average
   }
}