A placement and weight result is returned 372 for each ad and {HEAD ~ the position} of {TAIL ~ the ads} in the heap are modified accordingly 
of
A placement and weight result is returned 372 for each ad and { HEAD ~ the position } of { TAIL ~ the ads } in the heap are modified accordingly
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH