#include<stdio.h>
int main()
{
	int n;
	scanf("%d", &n);
	int i;
	int a[1000006], b[1000006];
	for (i = 0; i < n; i++)
		scanf("%d", &a[i]);
	for (i = 0; i < n; i++)
		scanf("%d", &b[i]);
	int c[1000006];
	for (i = 0; i < n; i++)
		c[i] = (a[i] ^ b[i]);
	int cnt = c[0];
	c[n] = 0;
	for (i = 0; i < n; i++)
		if (c[i] != c[i + 1])
			cnt++;
	printf("%d\n", (cnt + 1) / 2);
	return 0;
}