#include <bits/stdc++.h>
using namespace std;

int main() {
  int N;
  cin >> N;
  vector<int> A(N);
  for (int i = 0; i < N; i++) cin >> A.at(i);
  vector<int> B(N);
  for (int i = 0; i < N; i++) cin >> B.at(i);
  int cnt = 0;
  for (int i = 0, b = 0; i < N; i++) {
    if (A.at(i) != B.at(i)) {
      if (!b) cnt++, b = 1;
    } else {
      b = 0;
    }
  }
  cout << cnt << "\n";
}