e=lambda _:list(input().split())
while 1:
 A=e(1);B=e(1);k=0
 for b in range(99):
  a=A;c=0
  for o in B[b:]:
   if o in a:a=a[a.index(o)+1:];c+=1
   else:break
  k=max(c,k)
 print(len(A)-k)