import sys; input = sys.stdin.buffer.readline
sys.setrecursionlimit(10**7)
from collections import defaultdict
con = 10 ** 9 + 7; INF = float("inf")

def getlist():
	return list(map(int, input().split()))

#処理内容
def main():
	N = int(input())
	A = getlist()
	B = getlist()
	cnt = 0
	val = 0
	for i in range(N):
		if A[i] != B[i]:
			val = 1
		else:
			if val == 1:
				cnt += 1
			val = 0

	if val == 1:
		cnt += 1

	print(cnt)

if __name__ == '__main__':
	main()