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

C=[0]*N
for i in range(N):
    if A[i]!=B[i]:
        C[i]=1
C=[0]+C

K=0
for i in range(N):
    if C[i+1]==1 and C[i]==0:
        K+=1
print(K)