#include <bits/stdc++.h>
#define F first
#define S second
using namespace std;
using ll = long long;
typedef pair<int, int> P;
ll Mod = 1000000007;
int main() {
  int N;
  cin >> N;
  int A[N],B[N];
  int C[N];
  for (int i = 0; i < N; i++) cin >> A[i];
  for (int i = 0; i < N; i++) cin >> B[i];
  int ans = 0;
  for (int i = 0; i < N; i++) {
    if (A[i] == B[i]) {
      C[i] = 0;
    } else {
      C[i] = 1;
    }
  }
  int st = 0;
  for (int i = 1; i < N; i++) {
    if (C[i-1] == 1 && C[i] == 0) {
      ans++;
    }
  }
  if (C[N-1] == 1) {
    ans++;
  }
  cout << ans << endl;
  return 0;
}