while 1:
	a = raw_input().split()
	b = raw_input().split()
	k = -1
	for x in b[48:54]:
		k = a.index(x, k + 1)
	i = j = 53
	for x in a[k:]:
		j += b[j] == x
	for x in a[k::-1]:
		i -= b[i] == x
	print 101 - j + i