def RunLengthEncoding(S):
    res = []
    N = len(S)
    i = 0
    while i < N:
        cnt = 1
        while i < N - 1 and S[i] == S[i + 1]:
            cnt += 1
            i += 1
        res.append((S[i], cnt))
        i += 1
    return res


N = int(input())
A = list(map(int, input().split()))
B = list(map(int, input().split()))

dif = [int(a != b) for a, b in zip(A, B)]
ans = 0
for k, v in RunLengthEncoding(dif):
    if k == 1:
        ans += 1
print(ans)