import java.net.*;
import java.io.*;
import java.util.*;
public class HostInfo {
    public static void main(String argv[]) {
	InetAddress ipAddr;
	try {
		ipAddr = InetAddress.getLocalHost();
		System.out.println ("This is "+ipAddr);
	} catch (UnknownHostException e) {
		System.out.println ("Unknown host");
	}
    }
}