static double a1short(double q, double L, double b, double p1short, double p2short, double q0) { double factor = 1.0; return a_short(q, L, b, p1short, p2short, factor, p1short - p2short, q0); }
string get_departure_msg() { string riders; if(!(riders = get_riders_as_string())) return 0; if(sizeof(get_riders()) != 1) { return riders + " ride in on " + a_short() + ".\n"; } else { return riders + " rides in on " + a_short() + ".\n"; } }