#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <stdio.h>

main(argc,argv)
int argc;
char *argv[];
{
  Display *display;
  short width,height;
  char *display_name;

  if (argc == 0)
    display_name = "";
  else
    display_name = argv[1];

  if ((display = XOpenDisplay(display_name)) != NULL)
    {
      width = DisplayWidth(display,DefaultScreen(display));
      height = DisplayHeight(display,DefaultScreen(display));
    }
  else
    {
      width = -1;
      height = -1;
    }

  printf("%d %d\n",width,height);
  exit(0);
}