Subarna Raj Shrestha

n , m  =  ( int ( i )   for   i   in   input () . split ()) l = map ( int ,( input () . strip () . split ( ' ' ))) a = set ( map ( int , input () . strip () . split ( ' ' ))) b = set ( map ( int ,   input () . strip () . split ( ' ' ))) result = 0 for   i   in   l :      if   i   in   a :          result += 1      if   i   in   b :          result += -1 print ( result )