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

C=[0]
for i in range(N):
    C.append(abs(A[i]-B[i]))
C.append(0)
cnt=0
for i in range(1,N+2):
    if C[i]==1 and C[i-1]==0:
        cnt+=1
print(cnt)