class Song2After extends Object120 {
    String title;
    String artist;
    double length;  // running time, in s.
    boolean isCopyrighted;
    
    
    // the "constructor":
    Song2After( String t, String a, double l, boolean isC ) {
        // Song2 this = /* a Song2 object w/ all fields "zero-ish" */;  // implicit -- don't write it!
        this.title = t;
        this.artist = a;
        this.length = l;
        this.isCopyrighted = isC;
        // return this;    // implicit -- don't write it!
    }
    
     
    /** return whether `s` can be stored using `space` disk-space.
     * @param s the song to consider
     * @param space the amount of available space it has to fit into, in B.
     */
    static boolean willFit( Song2After s, int space ) {
        return (s.length/60)*3.0*Math.pow(2,20) <= space;
    }
    
    /** return whether one song is shorter than another.
     * @return whether s1 is shorter than s2.
     */
    static boolean isShorter( Song2After s1, Song2After s2 ) {
        return (s1.length < s2.length);
    }
    
    /** return a remix of a song.
     * @return `orig` remixed by D.J. `dj`, who added `newMaterialLength` seconds of ill beatz.
     */
    static Song2After remix( Song2After orig, String dj, double newMaterialLength ) {
        return new Song2After( orig.title + " (" + dj + " remix)",
                               orig.artist + " vs " + dj,
                               orig.length + newMaterialLength,
                               false );
    }
    
    
    
    static void testAll() {
        // some examples of Song2 objects:
        Song2After s1  = new Song2After("Old Town Road", "Lil Nas X", 120, true);
        Song2After s2  = new Song2After("Ring Ring", "Abba", 180, true);
        Song2After s2a = new Song2After("Ring Ring", "Abba", 180, true);
        
        
        printTestMsg("remix");
        assertEquals( new Song2After( "Old Town Road (ibarland remix)",
                                      "Lil Nas X vs ibarland",
                                      150,
                                      false ),
                      remix(s1, "ibarland", 30 ) );
        assertEquals( new Song2After("Ring Ring (saltman remix)", "Abba vs saltman", 180, false),
                      remix(s2, "saltman", 0 ) );
        printTestSummary();
    }
    
    public static void main( String[] args ) { testAll(); }
    
}