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