#include <bits/stdc++.h>

using namespace std;

int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  int N;
  cin >> N;
  vector<int> A(N), B(N);
  for (auto&& e : A) {
    cin >> e;
  }
  for (auto&& e : B) {
    cin >> e;
  }
  int res = 0;
  bool cur = A[0] == B[0];
  for (int i = 0; i < N; i++) {
    if (cur ^ (A[i] == B[i])) {
      if (!cur) res++;
      cur = A[i] == B[i];
    }
  }
  if (!cur) res++;
  cout << res << '\n';
  return 0;
}