import java.io.PrintStream;

public class AverageTwo
{
   public static void main(String[] args)
   {
      PrintStream out = System.out;
      
      int x = Integer.parseInt(args[0]);
      int y = Integer.parseInt(args[1]);
      
      int avg1 = (x + y) / 2;
      int avg2 = x / 2 + y / 2;
      int avg3 = x + (y - x) / 2;
      int avg4 = (int) (((double) x + y) / 2);
      
      out.println("avg1 " + avg1);
      out.println("agv2 " + avg2);
      out.println("avg3 " + avg3);
      out.println("avg4 " + avg4);
   }
}