import java.io.PrintStream;

public class SimpleStats
{
   public static void main(String[] args)
   {
      PrintStream out = System.out;
      
      int x1 = Integer.parseInt(args[0]);
      int x2 = Integer.parseInt(args[1]);
      int x3 = Integer.parseInt(args[2]);
      
      /*
        You need to compute AND output the min, max, average, and
        standard deviation of x1, x2, and x3 ...
      */
      int min = Math.min(Math.min(x1, x2), x3);
      int max = Math.max(Math.max(x1, x2), x3);
      double avg = (1.0 / 3) * (x1 + x2 + x3);
      double std = Math.sqrt(0.5 * (Math.pow((x1 - avg), 2) +
                                    Math.pow((x2 - avg), 2) +
                                    Math.pow((x3 - avg), 2)));
      out.println("min = " + min);
      out.println("max = " + max);
      out.println("avg = " + avg);
      out.println("std = " + std);
   }
}