import java.io.BufferedReader;
import java.io.InputStreamReader;

public class Main {

    public static void main(String[] args) throws Exception {

        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

        String str;

        while (!"".equals(str = br.readLine())) {

            if (str == null) {
                break;
            }


        System.out.println("Hello World!");

        }
    }
}