n = int(input())
lis = list(map(int,input().split()))
li = list(map(int,input().split()))
ans = 0
status = 0
for i in range(n):
    if lis[i] != li[i]:
        if status == 0:
            status = 1
            ans += 1
    else:
        status = 0
print(ans)