n = int(input())
a = list(map(int, input().split()))
b = list(map(int, input().split()))
ans = 0
for i in range(n):
    if a[i] != b[i]:
        ans += 1

for i in range(1, n):
    if (a[i] != b[i]) and (a[i-1] != b[i-1]):
        ans -= 1

print(ans)