Yes. Well done!
This is, indeed,
#ifdef SELECTRON
an event containing an electron.
#endif
#ifdef SMUON
an event containing a muon.
#endif
#ifdef SHADRON
an event containing a hadron.
#endif
#ifdef ELECTRON
an
event.
#endif
#ifdef MUON
an
event.
#endif
#ifdef TAU
an
event.
#endif
#ifdef QUARK
an
event.
#endif
#ifdef LNULNU
a event.
#endif
#ifdef QQQQ
a
event.
#endif
#ifdef ENUQQ
a
event.
#endif
#ifdef MUNUQQ
a
event.
#endif
#ifdef TAUNUQQ
a
event.
#endif
#ifdef LLGAM
an event.
#endif
#ifdef QQGAM
an event.
#endif
#ifdef QQG
an event.
#endif
#ifdef FFFF
a "four fermion" event
#endif
Now go on to the next challenge event by clicking here, please.
Terry Wyatt. March 1997.