import java.util.*;
import java.util.zip.*;
import java.util.List;
import java.util.regex.*;
import java.util.concurrent.*;
import java.util.concurrent.atomic.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;
import javax.swing.table.*;
import java.io.*;
import java.net.*;
import java.lang.reflect.*;
import java.lang.ref.*;
import java.lang.management.*;
import java.security.*;
import java.security.spec.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import javax.imageio.*;
import java.math.*;
public class main {


public static void main(String[] args) throws Exception {
  doIHavePublicIPs_verbose = true;
  if (doIHavePublicIPs())
    print("I'm public! I must be a server!");
  else
    print("I'm firewalled. Or totally offline!");
}

static volatile StringBuffer local_log = new StringBuffer(); // not redirected
static volatile StringBuffer print_log = local_log; // might be redirected, e.g. to main bot

// in bytes - will cut to half that
static volatile int print_log_max = 1024*1024;
static volatile int local_log_max = 100*1024;

static boolean print_silent; // total mute if set

static void print() {
  print("");
}

// slightly overblown signature to return original object...
static <A> A print(A o) {
  if (print_silent) return o;
  String s = String.valueOf(o) + "\n";
  StringBuffer loc = local_log;
  StringBuffer buf = print_log;
  int loc_max = print_log_max;
  if (buf != loc && buf != null) {
    print_append(buf, s, print_log_max);
    loc_max = local_log_max;
  }
  if (loc != null) 
    print_append(loc, s, loc_max);
  System.out.print(s);
  return o;
}

static void print(long l) {
  print(String.valueOf(l));
}

static void print(char c) {
  print(String.valueOf(c));
}

static void print_append(StringBuffer buf, String s, int max) {
  synchronized(buf) {
    buf.append(s);
    max /= 2;
    if (buf.length() > max) try {
      int newLength = max/2;
      int ofs = buf.length()-newLength;
      String newString = buf.substring(ofs);
      buf.setLength(0);
      buf.append("[...] ").append(newString);
    } catch (Exception e) {
      buf.setLength(0);
    }
  }
}
static boolean doIHavePublicIPs_verbose;

static boolean doIHavePublicIPs() {
  for (String ip : getMyIPs()) {
    boolean b = isPublicIP(ip);
    if (doIHavePublicIPs_verbose)
      print("IP " + ip + " => " + (b ? "public" : "private"));
    if (b) return true;
  } return false;
}


static boolean isPublicIP(String ip) { try {
 
  InetAddress addr = InetAddress.getByName(ip);
  ip = addr.getHostAddress();
  return !(
    ip.startsWith("127.")
    || ip.startsWith("fe")
    || addr.isSiteLocalAddress());

} catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }}
static List<String> getMyIPs() { try {
 
  TreeSet<String> ips = new TreeSet<String>();
  Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
  while (interfaces.hasMoreElements()) {
    NetworkInterface iface = interfaces.nextElement();
    // filters out 127.0.0.1 and inactive interfaces
    if (iface.isLoopback() || !iface.isUp())
        continue;

    Enumeration<InetAddress> addresses = iface.getInetAddresses();
    while(addresses.hasMoreElements()) {
      InetAddress addr = addresses.nextElement();
      String ip = addr.getHostAddress();
      if (ip.startsWith("127.")) continue;
      ips.add(ip);
    }
  }
  return new ArrayList<String>(ips);

} catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }}

}