N=int(input())
A = [int(i) for i in input().split()]
B = [int(i) for i in input().split()]
diff = [A[i]!=B[i] for i in range(N)]

flip = 1 if diff[0] else 0
for idx in range(1,N):
  if diff[idx-1] != diff[idx] and diff[idx]:
    flip += 1
print(flip)