#include <iostream>
#include <map>
#include <set>
#include <queue>
#include <cmath>
#include <vector>
#include <string>
#include <algorithm>
#include <functional>
using namespace std;
#pragma warning (disable: 4996)

int N, A[1 << 18], B[1 << 18];
int cnt = 0;

int main() {
	cin >> N;
	for (int i = 1; i <= N; i++) cin >> A[i];
	for (int i = 1; i <= N; i++) cin >> B[i];
	for (int i = 1; i <= N; i++) B[i] ^= A[i];
	for (int i = 1; i <= N; i++) {
		if (B[i] == 1 && B[i - 1] == 0) cnt++;
	}
	cout << cnt << endl;
	return 0;
}