#include <bits/stdc++.h>
using namespace std;
int main(){
  int N;
  cin >> N;
  vector<int> A(N + 2, 0);
  for (int i = 1; i <= N; i++){
    cin >> A[i];
  }
  vector<int> B(N + 2, 0);
  for (int i = 1; i <= N; i++){
    cin >> B[i];
  }
  vector<int> C(N + 2);
  for (int i = 0; i < N + 2; i++){
    C[i] = (A[i] + B[i]) % 2;
  }
  int ans = 0;
  for (int i = 0; i < N + 1; i++){
    if (C[i] != C[i + 1]){
      ans++;
    }
  }
  cout << ans / 2 << endl;
}