N=int(input())
A=list(map(int,input().split()))
B=list(map(int,input().split()))
C=[A[i]^B[i] for i in  range(N)]+[1-A[N-1]^B[N-1]]
D=[C[i] for i in range(N) if C[i]!=C[i+1] ]
print(D.count(1))