I got answer as 48.
my logic-
there are 4 lists with 8 sorted elements.
lets pick all the first four and compare them to find smallest. that would be 3 comparisons.
to find the 2nd smallest it would require 2 comparisons and 1 comparison to find 3rd smallest.
therefore 3+2+1=6 comparisons in total.
if we do this 8 times we will get 6*8=48
what's the flaw in this logic?
Nevermind i know now why it's wrong