{TAIL ~ The improvement}, as defined as {HEAD ~ the difference} between the performance at the trial solution and the best solution found by VRO so far, is checked at 128 
{ TAIL ~ The improvement } , as defined as { HEAD ~ the difference } between the performance at the trial solution and the best solution found by VRO so far , is checked at 128
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH