import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.stream.Collectors;

// The main method must be in a class named "Main".
class Main {
    public static void main(String[] args) {
        String N="Hello World!";
        N = N.chars().mapToObj(String::valueOf).collect(Collectors.joining(" ")); // decomposer le string en char
        System.out.println(N);
    }
}