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

C = []
for a ,b in zip(A, B):
    if a == b:
        C.append(0)
    else:
        C.append(1)
X = []
cur = C[0]
cnt = 0
for c in C:
    if c == cur:
        cnt += 1
    else:
        X.append(cur)
        cur = c
        cnt = 1
else:
    X.append(cur)
print(sum(X))