void main() {
    IO.println("Hydrogen" + "Helium" + "Lithium");
    IO.println("Hydrogen" + " " + "Helium" + " " + "Lithium");
}

// From Groundwork, chapter 1 (ch01-your-first-programs), box 4.
// This example is from Groundwork, licensed CC BY-NC-SA 4.0.
// Run with: java ch01_04.java